Wave Technology List of Products and Services

"Development Design Tips PLUS No. 1" is a document that compiles explanatory comments from our engineers on various themes related to the design and development of equipment. It includes answers to "questions and doubts that you can't ask now" regarding EMI countermeasures, measurement, power supply, high frequency, and waterproof design. This document contains hints to promote development design. [Topics Covered] ◎EMI Countermeasures ◎Measurement and Testing ◎Power Supply (Power Electronics Design) ◎High Frequency Circuit Design ◎Waterproof Mechanisms *This document can be viewed via "PDF Download." Please feel free to contact us with any inquiries.

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"Although there are many things I want you to do, I don't have time to summarize the outsourcing details!" Do you have any such concerns? The 'Subscription Engineering Service' is a service where design and evaluation tasks that can be handled within a monthly fixed fee are decided in meetings and delivered on a monthly basis. Our engineers support a wide range from planning and specification consideration to mass production launch. Unlike dispatching, you can leverage the expertise of our 190 in-house engineers. [Customer Benefits] ■ If there are changes in specifications during the process, additional estimates or other work will not occur as long as the monthly workload remains unchanged. ■ Our engineers support a wide range from planning and specification consideration to mass production launch. ■ Unlike dispatching, you can leverage the expertise of our 190 in-house engineers. ■ Development support using equipment owned by WTI, such as testing facilities, is also possible. *For more details, please refer to the PDF materials or feel free to contact us.

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Our company has engineers who can handle both hardware design and software development, allowing us to provide comprehensive development support. (IoT, microcontrollers, wireless) We propose system configurations that realize the product images envisioned by our customers. We have a wealth of software development experience, particularly in IoT embedded devices, primarily with major equipment manufacturers, most of which involve firmware development for microcontrollers. Additionally, we offer subscription engineering services that combine software development with other hardware development. 【Features】 ■ Our engineers are capable of designing both hardware and software ■ We can propose suitable systems ■ We respond to customer requirements with rapid and high-quality development ■ We can shorten debugging periods and improve quality ■ In the event of trouble, we provide quick responses through a single point of contact *For more details, please refer to the PDF materials or feel free to contact us.

• Other Software

For those who find it difficult to understand even when studying independently and want to improve their skills as they spend more time at home, we have newly launched an on-demand course titled 'Mechanisms and Countermeasures of Emissions.' An iNARTE EMC engineer will serve as the instructor. Additionally, in our online courses, you can choose between 'on-demand courses' and 'live streaming courses.' [Features of the On-Demand Course] ■ A course where you learn by watching videos ■ Available to take at your preferred time and can be viewed repeatedly ■ For questions and answers, you can send them via email, and the instructor will respond separately *For more details, please refer to the PDF materials or feel free to contact us.

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Are you having trouble evaluating "power semiconductors"? Our company offers services tailored to your needs, such as "switching characteristic evaluation," "reliability testing," and "static characteristic evaluation." To promote your development design, we support evaluations related to "power semiconductors" from various angles. 【List of Services】 ■ Switching Characteristic Evaluation ■ Reliability Testing ■ Static Characteristic Evaluation ■ Noise Testing *For more details, please refer to the PDF document or feel free to contact us.

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This document introduces questions and answers related to waterproofing. It includes misunderstandings about waterproofing, waterproof standards, and inspections of waterproof equipment, featuring know-how shared by our engineers. This is a book that explains these topics in an easy-to-understand manner with characters. 【Contents】 ■#050 Mechanisms and Enclosures – Misunderstandings about Waterproofing ■#051 Mechanisms and Enclosures – About Waterproof Standards ■#055 Waterproofing Related – Inspection of Waterproof Equipment ■#056 Waterproofing Related – Inspection of Waterproof Equipment (2) *For more details, please refer to the PDF document or feel free to contact us.

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This document introduces questions and answers about high frequency. It includes know-how shared by our engineers on topics such as high frequency components (capacitors), shielding (electrostatic shielding), GND (ground), and what a Smith chart is. It is a book that provides easy-to-understand explanations through characters. 【Contents】 ■#026 High Frequency - About High Frequency Circuit Design Tips PLUS ■#027 High Frequency - About High Frequency Components (Capacitors) ■#030 High Frequency - About High Frequency Components (Resistors) ■#031 High Frequency - About High Frequency Components (Semiconductors) ■#032 High Frequency - About Pattern Design *For more details, please refer to the PDF document or feel free to contact us.

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This document introduces questions and answers regarding noise related to EMI countermeasures. It includes insights from our engineers on topics such as the three factors of noise radiation, accelerating countermeasures in simulations, and how to identify noise sources. The content is presented in an easy-to-understand manner with character illustrations. 【Contents】 ■#002 EMI Countermeasures - Why does noise occur? Question the contributing factors. ■#003 EMI Countermeasures - The three factors of noise radiation; implement countermeasures upstream. ■#004 EMI Countermeasures - To identify noise sources, understand frequency and use analysis tools. ■#005 EMI Countermeasures - Countermeasures in noise propagation paths involve filter insertion and ground improvement. ■#006 EMI Countermeasures - Aim for countermeasures that target the opposite direction of worsening. *For more details, please refer to the PDF document or feel free to contact us.

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This document introduces questions and answers regarding noise terminal voltage for EMI countermeasures. It includes know-how shared by our engineers on technologies such as V-type power supply impedance stabilization circuit networks and Δ-type power supply impedance stabilization circuit networks. This is a book that provides easy-to-understand explanations by characters. 【Contents】 ■#040 EMI Countermeasures - Conducted Emission (Noise Terminal Voltage) V-type Power Supply Impedance Stabilization Circuit Network ■#041 EMI Countermeasures - Conducted Emission (Noise Terminal Voltage) Δ-type Power Supply Impedance Stabilization Circuit Network *For more details, please refer to the PDF document or feel free to contact us.

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This document introduces questions and answers regarding EMI countermeasure resistive attenuators (attenuators). It includes know-how shared by our engineers about T-type attenuators, N-type attenuators, π-type attenuators, and more. This is a book that provides easy-to-understand explanations by characters. 【Contents】 ■#076 EMI Countermeasures – Resistive Attenuators (Attenuators) – ■#077 EMI Countermeasures – T-type Attenuators – ■#078 EMI Countermeasures – T-type Attenuators Part 2 – ■#079 EMI Countermeasures – π-type Attenuators – *For more details, please refer to the PDF document or feel free to contact us.

• Other measuring instruments
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This document introduces questions and answers regarding EMI countermeasures for transmission lines. It includes know-how shared by our engineers on topics such as the propagation speed of electrical signals, distributed constants, and lumped constants. It is a book that provides easy-to-understand explanations through characters. 【Contents (excerpt)】 ■#038 EMI Countermeasures - Signal Transmission Line Design and EMI ■#057 EMI Countermeasures - Transmission Line 1 (Propagation Speed of Electrical Signals) ■#058 EMI Countermeasures - Transmission Line 2 (Distributed Constants and Lumped Constants) ■#059 EMI Countermeasures - Transmission Line 3 (Impedance 1) ■#060 EMI Countermeasures - Transmission Line 3 ■#061 EMI Countermeasures - Transmission Line 4 (Overshoot) *For more details, please refer to the PDF document or feel free to contact us.

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This document introduces questions and answers regarding capacitors for EMI countermeasures. It includes information on the impedance of capacitors, the equivalent impedance Z when two capacitors are connected in parallel, frequency characteristics, and more. It is a book that explains these concepts in an easy-to-understand manner with engaging characters. 【Contents】 ■#066 EMI Countermeasures - Resonance of Capacitors 1 ■#067 EMI Countermeasures - Resonance of Capacitors 2 ■#068 EMI Countermeasures - Resonance of Capacitors 3 ■#069 EMI Countermeasures - Resonance of Capacitors 4 ■#071 EMI Countermeasures - Resonance of Capacitors 5 ■#075 EMI Countermeasures - Resonance of Capacitors 6 *For more details, please refer to the PDF document or feel free to contact us.

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This document introduces questions and answers regarding EMI countermeasures and bypass capacitors. It includes insights from our engineers on topics such as "A bypass capacitor is not a capacitor," "Larger capacitors can substitute for smaller ones," "The proper placement of bypass capacitors," and "How to enhance the effectiveness of bypass capacitors." It is presented in a way that is easy to understand, featuring character illustrations. 【Contents】 ■#010 EMI Countermeasures – A Bypass Capacitor is Not a Capacitor?? ■#011 EMI Countermeasures – Can a Large Bypass Capacitor Substitute for a Small One?? ■#012 EMI Countermeasures – There are Proper Techniques for Bypass Capacitor Placement ■#013 EMI Countermeasures – Beware of Capacitance Variability with Bypass Capacitors ■#014 EMI Countermeasures – Want to Enhance the Effectiveness of Bypass Capacitors? Here Comes Mr. R! *For more details, please refer to the PDF document or feel free to contact us.

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This document introduces questions and answers regarding common mode in EMI countermeasures. Starting with "What are common mode and normal mode?" it includes insights from our engineers on topics such as "The mechanism of common mode noise generation" and "Countermeasures for common mode noise." It is a book that provides easy-to-understand explanations through characters. 【Contents】 ■#015 EMI Countermeasures - What are common mode and normal mode? ■#028 EMI Countermeasures - The mechanism of common mode noise generation Part 1: Mode conversion ■#029 EMI Countermeasures - The mechanism of common mode noise generation Part 1 ■#033 EMI Countermeasures - The mechanism of common mode noise generation Part 2: Sequel ■#039 EMI Countermeasures - Countermeasures for common mode noise *For more details, please refer to the PDF document or feel free to contact us.

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This document introduces questions and answers about EMI countermeasure filters. It includes know-how shared by our engineers regarding inductors and capacitors. It is a book that provides easy-to-understand explanations by characters. [Contents] ■#047 EMI Countermeasures - Filters (Inductor Part 1) ■#048 EMI Countermeasures - Filters (Inductor Part 2) ■#052 EMI Countermeasures - Filters (Capacitor Part 1) ■#053 EMI Countermeasures - Filters (Capacitor Part 2) *For more details, please refer to the PDF document or feel free to contact us.

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We have newly established an on-demand course titled "Learn the Basics of Impedance Matching with Mr. Smith" for those interested in high-frequency analog circuits and beginners in high-frequency topics. An essential tool for designing high-frequency circuits is the Smith chart. This course will help you understand the basics of the Smith chart and learn fundamental concepts of impedance matching using the Smith chart app (Mr. Smith). After 6 hours of study, you will be able to design simple matching circuits. 【Features】 ■ Understand "What is high frequency?" ■ Deepen your understanding of impedance matching ■ Be able to design simple matching circuits using the Smith chart app (Mr. Smith) *For more details, please refer to the PDF document or feel free to contact us.

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This document introduces questions and answers regarding power supplies. It includes know-how shared by our engineers on topics such as "Power Electronics Design: Switching Devices," "Diode Selection," "IGBT Selection," "MOSFET Selection," "Electrolytic Capacitor Selection," "Film Capacitor Selection," and "Reactor Selection." It is a book that provides easy-to-understand explanations through characters. 【Contents (Excerpt)】 ■#021 Power Supply - Power Electronics Design (Switching Devices) ■#022 Power Supply - Power Electronics Design (Diode Selection) ■#023 Power Supply - Power Electronics Design (IGBT Selection) ■#024 Power Supply - Power Electronics Design (MOSFET Selection) ■#025 Power Supply - Power Electronics Design (Electrolytic Capacitor Selection) *For more details, please refer to the PDF document or feel free to contact us.

• DC Power Supply

This document introduces questions and answers regarding measurement and testing. It includes know-how shared by our engineers on topics such as "Instrumentation amplifiers are convenient," "How to measure leakage current," "Effective use of isolation amplifiers," and "Aliasing and Nyquist frequency." It is a book that provides easy-to-understand explanations through characters. 【Contents (excerpt)】 ■#016 Measurement and Testing - Instrumentation amplifiers are convenient (current detection) - ■#017 Measurement and Testing - Instrumentation amplifiers are convenient (micro-signal detection) - ■#018 Measurement and Testing - Instrumentation amplifiers are convenient (can output based on references other than GND) - ■#019 Measurement and Testing - Precautions when using instrumentation amplifiers - ■#020 Measurement and Testing - How do you measure leakage current? - *For more details, please refer to the PDF document or feel free to contact us.

• Other measuring instruments

We would like to introduce our "Techno-Sherpa." In our "Engineer Training Services," we support the development of practical engineers, including new graduates and non-electrical engineers, with a comprehensive technical education menu. Additionally, in our "Technical Consulting Services," we provide solutions to the technical challenges faced by our customers, including location detection technology, EMC countermeasure considerations, waterproof enclosure design, and thermal/stress simulations. [Engineer Training Services (Excerpt)] ■ Basic Electronics Course PLUS (2-day course) ■ Basic Electronics Course (5-day course) ■ Power Electronics Course ■ Basic EMC Course *For more details, please refer to the PDF materials or feel free to contact us.

• Other Management Services
• Surveying Consulting
• Consulting companies

This document introduces the support provided by Wave Technology Co., Ltd. It includes "Waterproofing Support," which allows for estimating the limits of waterproof measures, as well as "Vibration Testing Support" to address issues caused by vibrations during transportation and operation (actual usage conditions). Please feel free to download and take a look. 【Contents (excerpt)】 ■ Waterproofing Support ■ Temperature Cycle Testing Support ■ Vibration Testing Support ■ Drop and Impact Testing Support ■ EMI Countermeasure Support *For more details, please refer to the PDF document or feel free to contact us.

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The "Subscription Engineering Service" is a service where design and evaluation tasks that can be handled within a monthly fixed fee are determined through discussions with customers, and deliverables are provided on a monthly basis. This allows for focused discussions on the work content and immediate commencement of tasks. It significantly reduces the effort involved in placing orders and supports timely development for customers. Additionally, development support using our testing equipment (such as waterproof testing machines and simple anechoic chambers) is also available. 【Customer Benefits】 ■ Significant reduction in the effort involved in placing orders ■ A collective effort from various specialized engineers within the company to solve customers' technical challenges ■ Development support using our testing equipment is also available *For more details, please refer to the PDF document or feel free to contact us.

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This document provides detailed information about our "Chemical Substance Content Survey Service," which handles the investigation of chemical substances contained in used parts and the creation of environmental data for products. Our company has all the design teams necessary for product development (electrical, mechanical, circuit board, software) in place, allowing us to undertake these tasks collectively and collaborate closely within the company to advance the design. This enables us to optimize products in terms of design, cost, and performance. Additionally, we can incorporate key technological elements that are in high demand in recent product development, such as position detection, wireless power transfer, signal processing, image recognition, and AI, by leveraging our internal and external networks. [Contents] ■ What is a Chemical Substance Content Survey and Environmental Impact Substance Survey? ■ Details of the service ■ Process of the Chemical Substance Content Survey and Environmental Impact Substance Survey ■ Trends in major regulations and service overview *For more details, please refer to the PDF document or feel free to contact us.

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The "Waterproof Concierge" is a contract service for mechanical design that quickly resolves issues and implements measures with logical verification in its design, thereby shortening development lead times. Our company has all the design teams necessary for product development (electrical, mechanical, circuit board, software) in-house, allowing us to undertake these tasks collectively and collaborate closely on design. This enables us to produce products that are optimized in terms of design, cost, and performance. Additionally, we can incorporate highly demanded technological elements in recent product development, such as position detection, wireless power transmission, signal processing, image recognition, and AI, by leveraging our internal and external networks. 【Features】 - In-house waterproof testing allows for speedy responses (IPX5 and 6 environments available) - Estimation of limit values for waterproof measures is possible - Extensive development track record - Support is available not only for new waterproof designs but also from the intermediate stages of development *For more details, please refer to the PDF materials or feel free to contact us.

• Waterproof sheet
• Emergency alarm system
• Gas leak device

The "Waterproof Concierge" is a service that provides speedy solutions and countermeasures with a design that incorporates logical verification, thereby shortening development timelines. In general testing sites, pass/fail judgments cannot be made without on-site evaluation (according to our research). The "Waterproof Concierge" has various advantages as our engineers handle the evaluations. Furthermore, we support the standardization of waterproof design according to customer requests. Please feel free to consult us when needed. 【Features】 ■ Fast response due to in-house waterproof testing ■ Ability to estimate limit values for waterproof measures ■ Extensive development track record ■ Support available not only for new waterproof designs but also from the intermediate stages of development *For more details, please refer to the PDF materials or feel free to contact us.

• Waterproof sheet
• Emergency alarm system
• Gas leak device

"I want to investigate the causes and countermeasures for the areas that failed the waterproof test." "I want to confirm the limits of the product (design margin)." Do you have such concerns? Wave Technology Co., Ltd. offers waterproof testing services equivalent to IPX5, IPX6, and IPX9K. We provide a variety of plans, including "Plan A," which is for testing only, as well as "Plan B" and "Plan C," which include testing and support for defects. Please feel free to consult us when you need our services. 【Plan Details】 ■ Plan A: Testing only ■ Plan B: Testing + defect support ■ Plan C: Testing + design support + standardization *For more details, please refer to the PDF document or feel free to contact us.

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We would like to introduce our "PCB Design Contract Service." We have all the design teams necessary for product development (electrical, mechanical, PCB, software) in place, allowing us to undertake these tasks collectively and collaborate closely within the company to optimize design, cost, performance, and other aspects, resulting in well-finished products. Additionally, we can incorporate key technologies that are in high demand in recent product development, such as position detection, wireless power transfer, signal processing, image recognition, and AI, by leveraging our internal and external networks. 【Features】 ■ Proven track record in designing various types of PCBs ■ Designs that reflect electrical analysis for SI/PI/EMI based on customer requests (in collaboration with partner companies) ■ Paper-based circuit diagrams are retraced using circuit diagram CAD, and netlists are created ■ Design and prototyping of special PCBs such as flexible PCBs and aluminum PCBs are also possible ■ Prototyping is conducted in collaboration with partner companies, allowing for a variety of specifications to be completed in a short time *For more details, please refer to the PDF materials or feel free to contact us.

• Parts and Materials

If the temperature of the components is not measured correctly, it can lead to incorrect judgments. Our company holds a patent for accurately measuring the temperature of semiconductors, and we can accommodate everything from electronic components to thermal measurements of indoor spaces. If you want to understand the temporal changes in component temperature or thermal resistance, please feel free to consult us. 【Overview】 ■ Items to be prepared by the customer - Measurement samples - Peripheral equipment necessary for the operation of the measurement samples - Measurement specifications (operating conditions, measurement locations, measurement environment) ■ Deliverables - Report (measured results, discussion) *For more details, please refer to the PDF document or feel free to contact us.

• Other services and technologies

The "Electronic Component Replacement Consideration Service" is a service that leads to the resolution of the concern, "I'm having trouble considering replacements for electronic components..." We provide a one-stop solution for alternative product research, redesign, prototyping, and evaluation regarding electronic component replacement considerations. Our technical range is broad, capable of handling everything from analog and digital circuits to high-frequency circuits, as well as board, mechanical, and thermal design, allowing us to meet a variety of customer needs. 【Features】 ■ One-stop solution for alternative product research, redesign, prototyping, and evaluation ■ Broad technical range available ■ Ability to respond to diverse customer needs *For more details, please refer to the PDF document or feel free to contact us.

• IT Control and Services

★★Shirutoku Report: Useful Information You Should Know★★ This report introduces the circuit operation of power converters. A power converter is a device that converts the direct current (DC) generated by solar panels into alternating current (AC) for commercial power systems. As an example, we have included a configuration diagram that only describes the power circuit using a transformer-less method. Please take a moment to read it. 【Featured Content】 ■ About the circuit operation of power converters - Chopper circuit - Inverter circuit ■ Have you ever experienced issues where the device does not operate even though it was built according to the circuit diagram, or where the switching elements fail immediately? *For more details, please refer to the PDF document or feel free to contact us.

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★★Shirutoku Report: Useful Information You Should Know★★ This report introduces the most frequently asked questions from customers regarding the development of waterproof products and their solutions. You may have come across the terms "waterproof specifications IPX5, 6, 7" in various product fields. Waterproof specifications have become a standard feature in smartphones, and as a result, the demand for waterproof functionality is increasingly expected across all consumer products. We provide answers to questions such as "What are the structural differences between waterproof and non-waterproof products?" and "What does the evaluation of waterproof products entail?" along with key points. We encourage you to read it. 【Contents (Excerpt)】 ■Question: What are the structural differences between waterproof and non-waterproof products? ■Question: I want to have a certain level of waterproof performance, but I prioritize design and production costs. In this case, what level of protection rating is achievable? ■Question: What does the evaluation of waterproof products entail? *For more details, please refer to the PDF document or feel free to contact us.

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★★Shirutoku Report: Useful Information You Should Know★★ This report introduces the essential "antenna" for communication devices. We describe the characteristics of antennas commonly used in wireless communication devices. Our company provides support services to address improvements in antenna communication distance, so if you have any inquiries or would like to consult with us, please feel free to contact us. 【Contents】 ■ Antennas used in wireless communication devices ■ Grounding (GND) is important for antennas! ■ Be careful with the substrate when using pattern antennas! ■ Check the finish once the substrate is completed! ■ Pay attention to the area around the antenna! ■ Strategies for improving antenna communication distance *For more details, please refer to the PDF document or feel free to contact us.*

• Information and communication equipment and infrastructure

★★Shirutoku Report: Useful Information You Can Benefit From★★ This report introduces the use of "interface circuits" that make measurement convenient, which is being developed by the Custom Technology Division. Our company occasionally prepares highly versatile "interface circuits" as originals, and this time we are featuring one of those examples. Proposing solutions to our customers' challenges is a hallmark of our services. If you are interested, we look forward to hearing from you. 【Contents (Excerpt)】 ■ Providing services centered around custom measurement ■ What is an interface circuit? ■ Image of the configuration of an interface circuit (analog isolation circuit board) ■ Production board for the interface circuit (analog isolation circuit board) *For more details, please refer to the PDF document or feel free to contact us.

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★★Shirutoku Report: Useful Information You Should Know★★ This report introduces the composition (types) of circuit board data. We provide a diagram outlining the general flow from circuit board design to manufacturing. Our company can convert Gerber data to our CAD data (CR5000BD) for design purposes when a revision of existing circuit boards is necessary, such as for the development of similar models or for discontinued parts (EOL, discon). If you need designs that utilize existing design assets, please feel free to contact us. 【Main Circuit Board Design CAD (Excerpt)】 ■CR5000BD (Zuken) - Circuit board CAD data file extension: .pcb/.rul - Cover data file extension: .phl/.phd ■CR8000DF (Zuken) - Circuit board CAD data file extension: .dsgn - Cover data file extension: fph/fpl *For more details, please refer to the PDF document or feel free to contact us.

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We are offering our "Radio Wave Anechoic Chamber Rental Service" at a special campaign price to celebrate the 5th anniversary of its launch. This rental service includes the use of a "Simple Radio Wave Anechoic Chamber" and an "Electromagnetic Wave Visualization System." We also have a variety of noise countermeasure equipment, such as the "Electromagnetic Wave Visualization System" and "Noise Terminal Voltage Measurement System." We encourage you to consider applying for this opportunity. 【Campaign Details】 ■ Price: 5,000 yen per hour (including tax) * An additional equipment training fee of 3,000 yen (including tax) is required. Customers who have used our services within the past year are exempt from this fee. ■ Options - Electromagnetic Wave Visualization System - Δ-type Power Supply Impedance Stabilization Circuit Network * For more details, please refer to the PDF document or feel free to contact us.

• Other services and technologies

★★Shirutoku Report: Useful Information You Can Benefit From★★ Our company is involved in the development of semiconductor package mounting technology and mounting reliability technology. We mainly focus on packages known as BGA (Ball Grid Array). In this report, we will introduce the daisy chain sample used for evaluating the mounting reliability of semiconductor packages. [Contents] ■ Daisy chain sample for identifying breakage points ■ Daisy chain sample for identifying breakage points - Case studies from customer inquiries *For more details, please refer to the PDF document or feel free to contact us.*

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★★Shirutoku Report: Useful Information You Can Benefit From★★ Power supply equipment includes electrolytic capacitors, photo couplers (optical communication devices), relays, and other components that must meet the product's lifespan requirements. There are many methods for verifying lifespan through lifespan calculations and electrical evaluations. This report introduces examples of electrical evaluations. [Contents] ■Electrolytic Capacitors ■Photo Couplers *For more details, please refer to the PDF document or feel free to contact us.*

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★★Useful Information Report: Knowledge is Power★★ This report introduces a board called M5stack, which is equipped with a Wi-Fi module called "ESP32," along with practical examples of its use. The creation process is super simple: it searches for Wi-Fi signals and displays the acquired data on the screen. That's all there is to it. Please take a moment to read it. 【Contents】 ■How to Make a Simple Wi-Fi Checker ・Recipe *For more details, please refer to the PDF document or feel free to contact us.

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★★Shirutoku Report: Useful Information You Should Know★★ The "power supply" is an essential component in electrical circuits. The "power supply" has functions such as converting voltage levels and transforming alternating current (AC) to direct current (DC). Among these, I would like to talk about the frequently used "DC-DC converter." A "DC-DC converter" is a device that converts direct current into direct current at different voltage levels. While detailed design methods can be referenced in specialized books, this report introduces key points for beginners when designing. 【Contents】 ■ Key Points in Circuit Design *For more details, please refer to the PDF document or feel free to contact us.*

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★★Shirutoku Report: Useful Information You Should Know★★ Without further ado, I will talk about the metal enclosures I am currently involved in developing. There are various processing methods for creating metal enclosures, and the design techniques change depending on the processing method. This report briefly introduces the representative processing methods and design techniques for metal enclosures. [Contents] ■ Press bending ■ Deep drawing ■ Die casting *For more details, please refer to the PDF document or feel free to contact us.

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★★Shirutoku Report: Useful Information You Can Benefit From★★ What kind of semiconductor failures come to mind when you think of them? First, you might think of damage caused by static electricity, right? Of course, optical semiconductors can also fail due to static electricity, but they can also fail due to light itself. In this report, we will explain a bit more about failures caused by light. [Contents] ■Failures Caused by Light *For more details, please refer to the PDF document or feel free to contact us.*

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★★Shirutoku Report: Useful Information You Can Benefit From★★ By switching semiconductor materials from Si to SiC (silicon carbide), the breakdown voltage of Schottky Barrier Diodes (SBD) has improved, making them usable in DC/DC converters for PCS. While using SiC enhances performance, cost issues had previously hindered its adoption. However, in the past year or two, cost challenges have improved, leading to an increase in usage opportunities. This report will briefly explain the types and characteristics of diodes. [Contents] ■ Types and Characteristics of Diodes *For more details, please refer to the PDF document or feel free to contact us.*

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• DC Power Supply
• Parts and Materials

★★Shirutoku Report: Useful Information You Should Know★★ In this report, we will introduce the "characteristic impedance (wiring impedance)" of printed circuit boards. With the recent increase in the speed of digital signals, the design of digital circuit boards now requires the concept of distributed constant circuits rather than lumped constant circuits, making it necessary to consider the characteristic impedance of the board in the design. So, how do we determine the characteristic impedance of a printed circuit board? [Contents] ■ Characteristic Impedance of Printed Circuit Boards *For more details, please refer to the PDF document or feel free to contact us.*

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★★Shirutoku Report: Useful Information You Can Benefit From★★ In recent years, our company has seen an increase in automotive-related business and is involved with V2H, a charging and discharging system for electric vehicles. V2H stands for "Vehicle to Home," which is an abbreviation for a system that allows the battery of an electric vehicle to be used at home. This report will introduce V2H. [Contents] ■ What is V2H? ■ What can you do with V2H? *For more details, please refer to the PDF document or feel free to contact us.

• Batteries and Capacitors
• DC Power Supply

★★Shirutoku Report: Useful Information You Should Know★★ The design values and finished values of wiring widths and layer spacing differ depending on the type of circuit board and manufacturing methods (such as subtractive methods, semi-additive methods, etc.). In this report, we will introduce the different types of circuit boards available. Additionally, WTI offers various types of circuit board design and prototyping services. Please feel free to reach out to us. 【Contents】 ■ Types of Circuit Boards and Their Applications *For more details, please refer to the PDF document or feel free to contact us.*

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★★Shirutoku Report: Useful Information You Can Benefit From★★ The performance requirements for developed products are increasing year by year, leading to a more challenging thermal environment due to the need for thinner and smaller products and the addition of circuit functions (such as communication functions), which increase heat sources. In response, our company has decided to offer a service that identifies the presence of thermal issues and the difficulty of thermal design early in the design phase (thermal issue preventive diagnosis). This report explains "Product Performance Requirements and Thermal Issues" and "Contents of Thermal Issue Preventive Diagnosis." [Contents] ■ About Thermal Simulation ■ Product Performance Requirements and Thermal Issues ■ Contents of Thermal Issue Preventive Diagnosis *For more details, please refer to the PDF document or feel free to contact us.

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