Wave Technology List of Products and Services

★★Shirutoku Report: Useful Information You Should Know★★ The Power Supply Design Department designs various types of switching power supplies, such as AC-DC converters and DC-AC inverters, and conducts various evaluations and tests specific to power supplies. Among these tests, there are rigorous evaluations known as "abnormal tests," which assess safety during component failures. One of the important devices that protects the evaluation equipment during such harsh tests is the "circuit breaker." Many may be more familiar with the term "breaker." This report will introduce you to these breakers. 【Contents】 ■ Ampere Breaker: Maintains the current value contracted with the power company ■ Leakage Breaker: Protects commercial systems held by households and power companies from accidents ■ Safety Breaker: Maintains the current value for each circuit (each room) *For more details, please refer to the PDF document or feel free to contact us.

• Power distribution and control panels

★★Shirutoku Report: Useful Information You Should Know★★ This report introduces the features of ballast power control. The ballast power supply refers to a device that stabilizes the discharge state of lamps, which are light sources such as car headlights and LCD projectors. Unlike general power supplies that control with constant voltage or constant current, to keep the lamp lit stably, it is necessary to understand the lighting characteristics of each type of lamp and control the power output according to the lamp's state. 【Contents Included】 ■ Example of lighting characteristics of ultra-high pressure mercury lamps used in LCD projectors ■ Fast control is required ■ Emits light at the necessary brightness ■ Control of the switching operation itself *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★★ This report introduces measures for dealing with equipment failures related to PC98. A customer consulted us about a printer connected to a PC98 used for controlling test equipment that had broken down, resulting in an inability to print data. They were wondering if there was any way to resolve this issue. Our company also responds to measures for dealing with failures and extending the life of aging tools, devices, and equipment surrounding production facilities, so please feel free to consult us if you have any concerns. 【Contents】 ■ Customer Consultation ■ Specific Measures ■ Construction of the Measures System *For more details, please refer to the PDF document or feel free to contact us.*

• Desktop PC
• Other PCs and OA equipment

★★Shirutoku Report: Useful Information You Should Know★★ This report introduces methods for quantitatively confirming the magnitude of circuit inductance. When improving the measurement environment for evaluating power semiconductor switching, it is sometimes necessary to reconsider the wiring. However, without a quantitative understanding of the circuit inductance in the measurement system, improvements can be difficult. By using measured circuit inductance values during simulations, results closer to actual measured waveforms can be obtained. 【Contents】 ■ Methods for improving circuit inductance ■ IGBT module measurement circuit examples ■ Methods for confirming circuit inductance *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 switching evaluation of power semiconductors such as power devices and power modules. The ideal switching operation is a state where there is no delay time in current and voltage when turning ON/OFF, meaning that there is no occurrence of power loss. However, during the switching operation of power devices, some delay time inevitably occurs. Our company has engineers with expertise in switching evaluation, so if you require evaluation of various power devices, please feel free to consult us. 【Contents】 ■ IGBT Module Measurement Circuit Examples ■ IGBT Module Measurement Environment Examples *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★★ In this report, we will introduce an important invisible element, "impedance," in addition to parasitic components that are not visible on circuit diagrams. Impedance refers to AC resistance and is often specified as 50Ω for single-ended and 100Ω for differential. In high-frequency circuit design, impedance becomes a critical issue. Even parasitic impedance that is not shown in the circuit diagram can be discerned by professionals. If you are interested, please feel free to contact us. 【Contents】 ■ An example of a circuit diagram created with LT-spice *For more details, please refer to the PDF materials or feel free to contact us.*

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★★Shirutoku Report: Useful Information You Should Know★★ This report introduces the ideals and realities of circuit diagrams. Circuit diagrams include electronic components such as capacitors, inductors, transistors, diodes, and resistors, which are treated as ideal elements. However, in real circuits, there are not only these elements but also parasitic components such as capacitive, inductive, and resistive elements, which can cause various adverse effects and hinder the intended operation of the designer. Our company has many engineers who are well-versed in parasitic components and can perform circuit design, so if you are interested, please feel free to contact us. [Contents] ■ Parasitic Capacitance ■ Parasitic Inductance ■ Parasitic Resistance *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 requirements for insulation and measures against noise. In electrical circuits, insulation may be used to avoid safety issues such as electric shock and to prevent unexpected current destruction. Common items we handle include communication interfaces like LAN and insulated power supplies. It is common to use optocouplers or transformers for the transmission of signals and power across insulated sections. If you are having trouble with noise measures, please feel free to contact us. 【Contents】 ■ Insulation and Noise Measures *For more details, please refer to the PDF document or feel free to contact us.*

• Parts and Materials

★★Shirutoku Report: Useful Information You Should Know★★ This report introduces the electrical evaluation related to switching power supplies. The evaluation of power circuits features a lot of content that confirms whether they can operate safely (i.e., whether there are any hazards). There are also specific aspects that may be unfamiliar to those not involved in power supply design or evaluation, so I would like to take this opportunity to explain them. 【Contents】 ■Electrical Characteristics Evaluation ■Component Rating Confirmation ■Abnormal Testing ■Temperature Rise Testing ■Immunity Testing ■Reliability Testing *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★★ This report is a continuation of the discussion on controlling illumination with Arduino from Shirutoku Report No. 58, and this time we have incorporated screen display and button operation. We will explain the LCD display method and button operation method with actual photos. Our company undertakes the development of various embedded devices and IoT devices using a variety of microcontrollers. If you have any inquiries, please feel free to contact us. [Contents] ■ LCD Display Method ■ Button Operation Method *For more details, please refer to the PDF document or feel free to contact us.

• System lighting and lighting control

★★Shirutoku Report: Useful Information You Can Benefit From★★ This report introduces illumination control using Arduino. For those who want to "add or change their favorite lighting patterns," we present examples of DIY projects using microcontrollers and modules with simple and convenient features. Please take a moment to read it. 【Contents】 ■ Equipment Used ■ Procedure *For more details, please refer to the PDF document or feel free to contact us.*

• System lighting and lighting control

★★Shirutoku Report: Useful Information You Should Know★★ This report introduces distributed constant circuits. We will explain distributed constant circuits, where the distances and dimensions of wiring and components are finite, and the signal transmission time is also finite, as well as concentrated constant circuits, which are the opposite concept where the distance of wiring is zero, using diagrams. Please take a moment to read it. 【Contents】 ■ Concentrated Constant Circuits ■ Distributed Constant Circuits *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 focuses on circuit verification using "SPICE," which allows for various validations. Using a filter as an example, we will present a verification designed to reduce the number of components by modifying the configuration, ensuring that the attenuation characteristics match at 10MHz, illustrated with diagrams. Our company also conducts validity checks of designs through simulations based on customer requests. We encourage you to read on. 【Contents】 ■ Examples of circuit verification using SPICE ■ One-point advice ■ Meaning of commands *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★★ In recent years, the rapid increase in solar power generation has disrupted the balance between supply and demand, raising concerns that supply (generation) may exceed demand. This report covers the output control function. When electricity supply is expected to exceed demand, power companies need to reduce the generation of renewable energy. 【Contents】 ■ What is the output control function? ■ Mechanism of the output control function - Information is registered on servers owned by each power company - Communication devices access the power company's server to obtain information - Information is sent to the power converter for control ■ Evaluation of the output control function *For more details, please refer to the PDF document or feel free to contact us.*

• Other power generation
• Other services and technologies

★★Shiruto Report: Useful Information You Can Benefit From★★ This report introduces systems compatible with storage batteries. Using solar power generation as an example, we explain the combinations of system operations over the course of a day. By setting the operating modes for each product, we can explore various conditions under which the storage battery charges/discharges, whether it operates when buying (selling) from the grid, and more. 【Contents】 ■ Storage Battery Compatible Systems ・Nighttime ・Morning (Evening) ・Daytime *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★★ This report is a continuation of the discussion on the avalanche rating tests of MOSFETs mentioned in Shirutoku Report No. 52. It explains the relationship between the transient thermal resistance of the device and the loss and time during avalanche operation using diagrams and graphs. When selecting a device, it is not very meaningful to compare devices measured under different conditions. It is recommended to measure in an environment as close to actual operation as possible, rather than relying solely on data sheet values. 【Contents】 ■ Transient thermal resistance of the device ■ Relationship between loss and time during avalanche operation ■ Graph of Tj and time *For more details, please refer to the PDF document or feel free to contact us.

• Other services and technologies

★★Shirutoku Report: Useful Information You Should Know★★ The avalanche rating measured in avalanche testing refers to the amount of energy that a power device can withstand before it begins to conduct current rapidly and ultimately fails when a voltage exceeding its breakdown voltage is applied. This report explains avalanche breakdown and UIS test circuits and waveforms using diagrams. To verify whether there are any issues in the event that the device enters avalanche mode, it is necessary to investigate the avalanche rating of power MOSFETs when designing power electronics circuits. [Contents] ■ Image of avalanche breakdown ■ Test circuit and waveform for measuring avalanche rating *For more details, please refer to the PDF document or feel free to contact us.

• Other services and technologies

★★Shirutoku Report: Useful Information You Should Know★★ Phase compensation in power circuits refers to the technology that controls the phase shifts caused by the numerous capacitors (C) and inductors (L) implemented on the power supply board, ensuring stable operation of the circuit. In this report, we will introduce examples of voltage and current phases, as well as the transfer function of feedback circuits, using diagrams. If the phase remains shifted, the control to lower the output voltage may conversely be transmitted, potentially causing the output voltage to rise indefinitely and lead to oscillation. We encourage you to read on. 【Contents (Excerpt)】 ■ Voltage and Current Phases ■ An Example of the Transfer Function of Feedback Circuits ■ Stability Confirmation Using Board Wiring ■ Changes in Board Bode Plots with Phase Compensation *For more details, please refer to the PDF document or feel free to contact us.*

• Other services and technologies

★★Shirutoku Report: Useful Information You Should Know★★ A power conditioner (power con) is an inverter device that converts renewable energy, such as solar power, into commercial alternating current used in homes. This report includes evaluations of certification tests for developed products, performance evaluations of products, and system tests of products related to power con evaluation. Additionally, we also introduce the "lightning surge test," which applies a voltage equivalent to lightning to confirm durability. We encourage you to read it. 【Contents】 ■ Certification test evaluation of developed products ■ Performance evaluation of products ■ System tests of products ■ Information on lightning surge tests *For more details, please refer to the PDF document or feel free to contact us.

• Other services and technologies
• Lightning protection

★★Shirutoku Report: Useful Information You Should Know★★ Feedback refers to the process of "returning" or "reverting," where output is fed back to the input side to control the output in accordance with the target. This report explains feedback control, which is closely related to power circuits, and open-loop control. Power circuits can experience significant changes in characteristics when various external loads are connected or when the input voltage fluctuates greatly, making feedback control very important. [Contents] ■ Open-loop Control ■ Feedback Control *For more details, please refer to the PDF document or feel free to contact us.*

• Other services and technologies

★★Useful Information Report: Knowledge is Beneficial★★ This report introduces representative methods of isolated switching power supplies that use transformers among the circuit configurations of switching power supplies. It includes circuit diagrams and features of the Forward method, Flyback method, Push-Pull method, and Full Bridge method. Please take a moment to read it. [Contents] ■ Forward Method ■ Flyback Method ■ Push-Pull Method ■ Full Bridge Method *For more details, please refer to the PDF document or feel free to contact us.

• Other services and technologies

★★Shirutoku Report: Useful Information You Should Know★★ This report explains the important Ioff function during partial power down. "Partial" means "some" or "partial," and partial power down refers to a state where power is turned off partially. During partial power down, it is necessary to be cautious during design, as there will be a mix of circuit blocks that are powered on and those that are powered off. 【Contents】 ■ Precautions during partial power down ■ Support for partial power down in external interfaces ■ Pull-up resistors *For more details, please refer to the PDF document or feel free to contact us.

• Other services and technologies

★★Shirutoku Report: Useful Information You Should Know★★ When evaluating power supplies, you may have experienced "oscillation at low temperatures!" In such cases, it is necessary to diagnose the frequency characteristics of the power supply more quantitatively and implement countermeasures. This report explains the performance of power supplies using diagrams and graphs, without using mathematical formulas, to provide a conceptual understanding. We encourage you to read it. [Contents] ■ Negative Feedback Circuit ■ Bode Plot (Gain Plot, Phase Plot) *For more details, please refer to the PDF document or feel free to contact us.*

• Other services and technologies

★★Shirutoku Report: Useful Information You Should Know★★ When developing a new product, many people have likely experienced the dilemma of whether to use a microcontroller or an FPGA for processing. Additionally, a common conversation is whether to process with software or hardware. In this report, we will discuss the key points of system design. For more details, please take a moment to read through it. [Contents] ■ Efficiency in System Design ■ Image of Processing Speed *For more information, please refer to the PDF document or feel free to contact us.*

• Other Software

★★Shirutoku Report: Useful Information You Can Benefit From★★ In this report, we will discuss the key points when creating embedded software (firmware), specifically about ensuring real-time performance: "Creating it to flow continuously." At WTI, we receive numerous requests for embedded software development from our customers, and we develop with a focus on reliability and quality, including the principle of "flowing continuously." If you are having trouble with software development, please contact WTI. [Contents] ■ Busy Signal ■ Sequential Operation ■ Post-Change Flow *For more details, please refer to the PDF document or feel free to contact us.

• Other Software

★★Shirutoku Report: Useful Information You Can Benefit From★★ The Software Design Department creates a lot of embedded software to control dedicated circuit boards. In this report, I will discuss the key points to consider when creating embedded software. The key point when creating embedded software is to ensure real-time performance: "Create it to flow continuously." For more details, please take a moment to read through it. [Contents] ■ Key Points When Creating Embedded Software *For more information, please refer to the PDF document or feel free to contact us.*

• Other Software

★★Shirutoku Report: Useful Information You Should Know★★ The power supply circuits handled by the Power Supply Design Department come in various circuit configurations, but they can largely be classified as switching power supplies. In this report, we will discuss the characteristics of switching power supplies. For more details, please take a moment to read through it. 【Contents】 ■ Advantages ■ Disadvantages *For more information, please refer to the PDF document or feel free to contact us.*

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★★Shirutoku Report: Useful Information You Can Benefit From★★ We mainly engage in the design of enclosures for outdoor products. Through this work, we often hear customers say, "It's hot, what should I do?" In this report, we will answer what to do in such cases. For more details, please take a moment to read. 【Contents】 ■The answer is "Just cool it down." *For more information, please refer to the PDF document or feel free to contact us.*

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★★Shirutoku Report: Useful Information You Should Know★★ Creating IoT devices with wireless communication capabilities from scratch presents several technically challenging issues. As a means to more easily achieve wireless communication functionality, one option is to mount a wireless module onto a circuit board. In this report, we will introduce wireless modules. For more details, please take a moment to read through it. [Contents] ■ What is a Wireless Module *For more information, please refer to the PDF document or feel free to contact us.*

• IoT
• Other Software

We offer a "Disassembly Investigation Report" (Reverse Engineering Report) that combines our unique perspective and research expertise. Our investigation goes beyond just disassembly, BOM creation, and circuit diagramming; we also delve into the characteristics of the target product (electrical characteristics, temperature rise). Our engineers, who have extensive experience in the field of reverse engineering, report from a unique designer's perspective. *The price for the report starts at ¥198,000. Please contact us for more details. 【Features】 ■ Combines unique perspectives and research expertise ■ Options for partial report sales and comparison reports for two models available upon request ■ Our engineers, with rich experience, report from a unique designer's perspective ■ Investigation goes beyond disassembly, BOM creation, and circuit diagramming to include the characteristics of the target product (electrical characteristics, temperature rise) *For more details, please refer to the PDF document or feel free to contact us.

• Structural Survey

★★Shirutoku Report: Useful Information You Should Know★★ What kind of measuring instruments do you use when evaluating the electrical characteristics of semiconductors like MOSFETs and bipolar transistors? While there are dedicated testers, curve tracers that allow for easy evaluation are also convenient, right? However, when using a curve tracer, have you ever thought, "There are so many evaluation items, it's a hassle to operate manually..." or "There are so many evaluations, it would be great if it could be operated more easily..."? If these needs can be met, you would be freed from the enormous evaluation time. Therefore, we would like to introduce the 'Automatic Measurement System for Curve Tracers.' For more details, please take a moment to read on. [Contents] ■ Automatic Measurement System for Curve Tracers *For more information, please refer to the PDF document or feel free to contact us.

• Measurement and Inspection
• Other measuring instruments

★★Shirutoku Report: Useful Information You Should Know★★ In the Structural Design Department, our main tasks include "structural design of metal and plastic enclosures using CAD" and "front-loading development using thermal fluid simulation/structural simulation technologies." *There are various names for this, including structural analysis, structural CAE, stress analysis, and FEM analysis.* In this report, we will briefly introduce our efforts in structural simulation, followed by a discussion on the analysis of rubber products (which play a role in waterproof design, among others). For more details, please take a moment to read through it. [Contents] ■ Efforts in Structural Simulation ■ Analysis of Rubber Products (which play a role in waterproof design, among others) *For more information, please refer to the PDF document or feel free to contact us.*

• Measurement and Inspection
• Scientific Calculation and Simulation Software

★★Shirutoku Report: Useful Information You Can Benefit From★★ The "Custom Measurement Service" is a service that provides the functions required in your research and development environment in the form of a tailor-made "Custom Measurement System." Are you thinking, "But a tailor-made solution seems too high-end..."? At WTI, we can relatively easily build a system by combining it with existing equipment in collaboration with partner companies. In this report, we will introduce this service based on case studies. Please take a moment to read for more details. [Contents] ■ Case Study: Partner Company A *For more details, please refer to the PDF document or feel free to contact us.*

• Measurement and Inspection
• Other services and technologies

★★Shirutoku Report: Useful Information You Can Benefit From★★ How do you compile reports from data collected from various measuring instruments during evaluation analysis? Many of you might be manually and patiently rearranging data or creating graphs. When the volume becomes enormous, it can take a lot of time and be very inefficient. If there are mistakes, you might have to start all over again. It would be great to have something that anyone can use, doesn’t take much time, and doesn’t lead to errors. That’s why we want to introduce our company’s 'Data Analysis Tool.' For more details, please take a moment to read on. [Contents] ■ Data Analysis Tool provided by Wave Technology *For more information, please refer to the PDF materials or feel free to contact us.*

• Other measuring instruments
• Other analytical equipment

★★Shirutoku Report: Useful Information You Can Benefit From★★ I mainly design matching circuits for high-frequency power amplifiers used in commercial radio equipment. In this report, I will share my experiences regarding the discontinuation of capacitors (EOL: End Of Life). For more details, please take a moment to read through it. [Contents] ■ Recent EOL Situation ■ Alternative Capacitors May Cause Performance Issues!? *For more information, please refer to the PDF document or feel free to contact us.*

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★★Shirutoku Report: Useful Information You Should Know★★ Suddenly, do you all know about "reliability testing"? In brief, it is a collective term for various tests that evaluate the reliability (performance, durability, safety, failure rate, etc.) of a product. The main objectives are to confirm whether the performance meets the design specifications and to assess whether it meets market quality requirements. In this report, we will introduce one of the durability tests for power devices, known as the "power cycle test." For more details, please take a moment to read on. 【Contents】 ■ Short Power Cycle Test (Reference: JEITA-ED-4701/601 602) ■ Long Power Cycle Test (Reference: JEITA-ED-4701/603) *For more information, please refer to the PDF document or feel free to contact us.

• Other services and technologies

★★Shirutoku Report: Useful Information You Should Know★★ When you want to "check characteristics while changing a certain parameter," "automatic measurement" is very convenient. In this report, I would like to briefly explain how to perform "instrument control" necessary for automatic measurement. For more details, please be sure to read on. 【Contents】 ■ Automatic Measurement / Step 1: Connect PC and Instrument ■ Automatic Measurement / Step 2: Prepare Control Library ■ Automatic Measurement / Step 3: Send Commands to Control the Instrument ■ Common Commands *For more details, please refer to the PDF document or feel free to contact us.

• Other measuring instruments

★★Shirutoku Report: Useful Information You Can Benefit From★★ The most challenging aspect I encountered while developing programs was the implementation of algorithms. There are many interesting algorithms, and recently I had the opportunity to explore Q-Learning, which is a type of reinforcement learning related to machine learning. I created a program (Cheese Puzzle Simulator) to demonstrate it. Q-Learning is one of the algorithms in reinforcement learning and is utilized in various fields, from autonomous driving to fintech. In this report, I would like to briefly introduce the Q-Learning algorithm. For more details, please feel free to read on. 【Contents】 ■Challenges ■Explanations *For more information, please refer to the PDF document or feel free to contact us.*

• others
• Other Software

★★Shirutoku Report: Useful Information You Should Know★★ In daily life, we don't often think about it, but when the temperature of an object changes, thermal expansion and contraction occur. The magnitude of this expansion and contraction varies depending on the properties of each material (coefficient of linear expansion). In this report, we will discuss the thermal stress that arises from this thermal expansion and contraction. For more details, please take a moment to read through it. 【Contents】 ■ Simple thermal warping calculation tool for laminated boards *For more information, please refer to the PDF document or feel free to contact us.*

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★★Shirutoku Report: Useful Information You Should Know★★ In recent years, while products have been miniaturizing, thermal issues have continued to worsen, and we have seen an increasing trend in inquiries from customers regarding thermal analysis. The inquiries cover a variety of topics, but in this report, we will briefly explain the thermal resistance of semiconductors, which is essential for thermal analysis. For more details, please take a moment to read through it. 【Contents】 ■Typical thermal resistances and their formulas *For more information, please refer to the PDF document or feel free to contact us.*

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We would like to introduce our "Wireless Power Transfer Demo Unit." The receiving circuit is installed underwater, and wireless power is transmitted through glass from the power transmission circuit to the receiving circuit. The power transmission circuit collects sensor information simultaneously with wireless power transfer. This can be applied to monitor the vacuum level in a vacuum chamber, as well as the temperature inside a constant temperature bath. 【Features】 ■ Receiving circuit installed underwater ■ Wireless power transfer through glass from the power transmission circuit to the receiving circuit ■ Water temperature measured with a temperature sensor mounted on the receiving circuit ■ Power transmission circuit collects sensor information simultaneously with wireless power transfer ■ Monitored temperature displayed on a PC ■ Receiving circuit can be individually recognized by ID *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 "High-Frequency Power Board." Using our wireless power evaluation high-frequency power board and reference antenna, you can confirm the operation of wireless power transmission. The high-frequency power board can output up to 50W, and with the reference antenna, it can operate with a load of up to 35W at a power transmission distance of 40mm. We can accommodate custom antenna designs according to your needs, so please feel free to contact us when you require assistance. 【Features】 ■ Uses our wireless power evaluation high-frequency power board and reference antenna ■ High-frequency power board can output up to 50W ■ Reference antenna can operate with a load of up to 35W at a power transmission distance of 40mm ■ Operates LED tape (12V) and fan (5V) as loads ■ The output start switch allows you to toggle the LED and fan On/Off by waving your hand *For more details, please refer to the PDF document or feel free to contact us.

• Other Software

We would like to introduce our "Wireless Power Transmission Demo Unit." A brightness sensor, temperature sensor, and receiving circuit are installed on a rotating table, allowing for wireless power transmission from the power transmission circuit to the receiving circuit. The power transmission circuit collects sensor information simultaneously with wireless power transmission. The sensors can be replaced with various types, making it possible to install them in locations where it was previously not feasible. 【Features】 ■ Brightness sensor, temperature sensor, and receiving circuit installed on a rotating table ■ Wireless power transmission from the power transmission circuit to the receiving circuit ■ Activation of each sensor connected to the receiving circuit ■ The power transmission circuit collects sensor information simultaneously with wireless power transmission ■ Monitor sensor information on a PC *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 examination of microcurrent measuring devices. Previously, I created a microcurrent measuring device for work. There are various methods for measuring microcurrents, but the method used this time is called the "feedback method." I will explain the basic circuit of this method. For more details, please be sure to read on. 【Contents】 ■ Target performance of microcurrent measuring devices ■ Basic principles of microcurrent measurement ■ Determining the measurement range ■ Selection of OP amplifiers ■ Phase compensation capacitors ■ Conclusion *For more details, please refer to the PDF document or feel free to contact us.

• Other measuring instruments

★★Shirutoku Report: Useful Information You Should Know★★ This report introduces the multi-channelization of automatic measurement. "Multi-channelization" refers to the process of enabling a measurement device that originally has only one channel to measure multiple points with a single trigger by continuing the switch circuit. With multi-channelization, challenges such as "wanting to automatically measure a large number of samples at once" and "unable to perform automatic measurement due to the need to switch connections" can be resolved. For more details, please take a moment to read through it. 【Contents】 ■ Multi-channelization of automatic measurement ■ Principles of multi-channel automatic measurement ■ Points to note for multi-channel automatic measurement ■ Conclusion *For more information, please refer to the PDF document or feel free to contact us.

• Other measuring instruments