AC adapter(05) - List of Manufacturers, Suppliers, Companies and Products | IPROS

Last Updated: Aggregation Period:Sep 23, 2026~Oct 20, 2026
This ranking is based on the number of page views on our site.

AC adapter Product List

121~150 item / All 164 items

Displayed results

UCL305 | AC Adapter

For detailed specifications and documentation of UCL305, please visit the official website. Feel free to consult us for power supply selection tailored to your requirements.

UCL305 is an AC adapter from Unifive. Please check the specifications section for the type and conditions of the output. For detailed specifications and datasheets, please visit the official product page linked below. https://www.unifive.com/products/standard/category/standard/6w/ucl305.html You can consult us for product selection and specification adjustments tailored to your equipment's requirements, using the standard model as a starting point for design. For inquiries about evaluation, samples, or quotes, please contact us through the official website. Please provide the necessary voltage, current, embedded space, operating environment, applicable standards, and planned quantities. We will confirm the feasibility, quantity, and delivery time individually.

  • DC Power Supply
  • AC adapter

Added to bookmarks

Bookmarks list

Bookmark has been removed

Bookmarks list

You can't add any more bookmarks

By registering as a member, you can increase the number of bookmarks you can save and organize them with labels.

Free membership registration

AC adapter "5W Series"

It is an AC adapter capable of supplying continuous output of 5W and complies with the RoHS directive, PSE J62368-1 compliant.

The "5W Series" is an AC adapter capable of supplying a continuous output of 5W and complies with the RoHS directive. It includes models such as the "GCF305S USB" with dimensions L39.5×W34.3×H23mm, the "GCF305SV" measuring L61×W37.5×H26mm, and the "GCF305B" at L38×W38×H19.5mm. The outer shell is made of PC material, which has the capability to absorb any potential temperature rise. Additionally, it is equipped with various protection circuits, including overcurrent protection, overvoltage protection, and temperature rise protection, ensuring that it is designed to safely shut down even if end customers misuse it. 【Features】 ■ Capable of supplying a continuous output of 5W ■ Complies with the RoHS directive ■ Outer shell made of PC material ■ Designed to safely shut down ■ PSE technical standards J62368-1 (H30) J55032 (H29) *For more details, please refer to the PDF materials or feel free to contact us.

  • Safety and consumables
  • AC adapter

Added to bookmarks

Bookmarks list

Bookmark has been removed

Bookmarks list

You can't add any more bookmarks

By registering as a member, you can increase the number of bookmarks you can save and organize them with labels.

Free membership registration

UNVCEN3005|5WAC Adapter

5W class AC adapter. For power selection and specification consultation based on requirements.

The UNVCEN3005 Series is a wall-mounted AC adapter (5W standard product) for I.C.T./AV equipment that complies with 62368-1 and PSE Appendix 8. It features a high-efficiency, energy-saving design that meets Energy Efficiency Level VI (ErP/DoE) and comes in five models with output voltages ranging from 5.0 to 24.0V. It provides stable power supply for audio, video, and information communication devices. Starting from the standard model, we can discuss power selection, specification adjustments, and customization according to your requirements. Availability, specifications, quantities, and delivery times will be confirmed individually. For detailed conditions and product catalogs, please check the official product page linked in the related links.

  • DC Power Supply
  • AC adapter

Added to bookmarks

Bookmarks list

Bookmark has been removed

Bookmarks list

You can't add any more bookmarks

By registering as a member, you can increase the number of bookmarks you can save and organize them with labels.

Free membership registration

UNVCKN3005|5WAC Adapter

5W class AC adapter. For power selection and specification consultation based on requirements.

The UNVCKN3005 Series is a wall-mounted AC adapter (5W, standard product) for I.C.T./AV equipment that complies with 62368-1 and PSE Appendix 8. It features a high-efficiency and energy-saving design that meets Energy Efficiency Level VI (ErP/DoE), with five models ranging from 5.0 to 24.0V. It provides stable power supply for audio, video, and information communication devices, among others. Starting from the standard model, we can discuss power selection, specification adjustments, and customizations according to your requirements. Availability, specifications, quantities, and delivery times will be confirmed individually. For detailed conditions and product catalogs, please check the official product page in the related links.

  • DC Power Supply
  • AC adapter

Added to bookmarks

Bookmarks list

Bookmark has been removed

Bookmarks list

You can't add any more bookmarks

By registering as a member, you can increase the number of bookmarks you can save and organize them with labels.

Free membership registration

UNVCAN3005 | 5WAC Adapter

5W class AC adapter. For power selection and specification consultation based on requirements.

The UNVCAN3005 Series is a wall-mounted AC adapter (5W, standard product) for I.C.T./AV equipment that complies with 62368-1 and PSE Appendix 8. It features a high-efficiency, energy-saving design that meets Energy Efficiency Level VI (ErP/DoE) and comes in five models with output voltages ranging from 5.0 to 24.0V. It provides stable power supply for audio, video, and information communication devices. Starting from the standard model, we can discuss power selection, specification adjustments, and customizations according to your requirements. Availability, specifications, quantities, and delivery times will be confirmed individually. For detailed conditions and product catalog, please check the official product page linked in the related links.

  • DC Power Supply
  • AC adapter

Added to bookmarks

Bookmarks list

Bookmark has been removed

Bookmarks list

You can't add any more bookmarks

By registering as a member, you can increase the number of bookmarks you can save and organize them with labels.

Free membership registration

UNVCZN3005|5WAC Adapter

5W class AC adapter. For power selection and specification consultation based on requirements.

The UNVCZN3005 Series is a wall-mounted AC adapter (5W standard product) for I.C.T./AV equipment that complies with 62368-1 and PSE Appendix 8. It features a high-efficiency and energy-saving design that meets Energy Efficiency Level VI (ErP/DoE), with five models ranging from 5.0 to 24.0V. It provides stable power supply for audio, video, and information communication devices. Starting from the standard model, we can discuss power selection, specification adjustments, and customizations according to your requirements. Availability, specifications, quantities, and delivery times will be confirmed individually. For detailed conditions and product catalogs, please check the official product page linked in the related links.

  • DC Power Supply
  • AC adapter

Added to bookmarks

Bookmarks list

Bookmark has been removed

Bookmarks list

You can't add any more bookmarks

By registering as a member, you can increase the number of bookmarks you can save and organize them with labels.

Free membership registration

UNVCUN3005 | 5WAC Adapter

5W class AC adapter. For power selection and specification consultation based on requirements.

The UNVCUN 5W Series is a wall-mounted AC adapter (5W standard product) for I.C.T./AV equipment that complies with 62368-1 and PSE Appendix Table 8. It features a high-efficiency and energy-saving design that meets Energy Efficiency Level VI (ErP/DoE), with five models ranging from 5.0 to 24.0V. It provides stable power supply for audio, video, and information communication devices. Starting from the standard model, we can discuss power selection, specification adjustments, and customizations according to your requirements. Availability, specifications, quantities, and delivery times will be confirmed individually. For detailed conditions and product catalogs, please check the official product page linked in the related links.

  • DC Power Supply
  • AC adapter

Added to bookmarks

Bookmarks list

Bookmark has been removed

Bookmarks list

You can't add any more bookmarks

By registering as a member, you can increase the number of bookmarks you can save and organize them with labels.

Free membership registration

AC adapter 7.5V 0.5A maximum output 3.75W

We handle various types of AC adapters.

● 3.75W, ultra-compact AC adapter ● Obtained global safety certifications (PSE, UL, CE) ● Compliant with tracking resistance tests and glow wire flammability tests ● Despite its small size, it contains an insulated transformer ● Wide input compatibility (AC100-240V) ● Manufactured by a major OEM company, ensuring longer reliability and peace of mind.

  • Company:サクル
  • Price:Less than 10,000 yen
  • DC Power Supply
  • AC adapter

Added to bookmarks

Bookmarks list

Bookmark has been removed

Bookmarks list

You can't add any more bookmarks

By registering as a member, you can increase the number of bookmarks you can save and organize them with labels.

Free membership registration

Switching AC adapter 24V 0.5A maximum output 12W

We handle various types of AC adapters.

● 12W, ultra-compact AC adapter ● Obtained global safety certifications (PSE, UL, CE) ● Compliant with tracking resistance tests and glow wire flammability tests ● Built-in insulated transformer despite its small size ● Wide input compatibility (AC 100-240V) ● Manufactured by a major OEM company for longer and more reliable use.

  • Company:サクル
  • Price:Less than 10,000 yen
  • DC Power Supply
  • AC adapter

Added to bookmarks

Bookmarks list

Bookmark has been removed

Bookmarks list

You can't add any more bookmarks

By registering as a member, you can increase the number of bookmarks you can save and organize them with labels.

Free membership registration

UNDEIS1054 Lightning surge protection product (High surge)

54W class AC adapter. For power selection and specification consultation based on requirements.

UNDEIS1054 Lightning Surge Resistant Product (High Surge) The UNDEIS 54W series is an AC adapter designed to pursue high reliability and stability required for communication infrastructure applications such as cable modems, network switches, and GPON routers. It adopts a high surge-resistant design that anticipates harsh power environments, including lightning surges and inrush currents, compliant with IEC61000-4-5 and NTT's technical requirements for communication equipment, TR189001. The design also considers the stringent standards required for communication equipment in Japan. It comes standard with various protection features such as short circuit, overvoltage, overcurrent, and overheating, and complies with safety and EMC standards including IEC 62368-1, PSE (Table 8), FCC Part 15-B, and VCCI-B. This power supply solution can be confidently adopted to support communication devices that cannot be stopped. Starting from the standard model, we can discuss power selection, specification adjustments, and customizations tailored to your requirements. Availability, specifications, quantities, and delivery times will be confirmed individually. For detailed conditions and product catalog, please check the official product page linked in the related links.

  • DC Power Supply
  • AC adapter

Added to bookmarks

Bookmarks list

Bookmark has been removed

Bookmarks list

You can't add any more bookmarks

By registering as a member, you can increase the number of bookmarks you can save and organize them with labels.

Free membership registration

Switching AC adapter 12V 0.5A maximum output 6W

We handle various types of AC adapters.

● 6W, ultra-compact AC adapter ● Obtained global safety certifications (PSE, UL, CE) ● Compliant with tracking resistance tests and glow wire flammability tests ● Built-in isolation transformer despite its small size ● Wide input compatibility (AC 100-240V) ● Manufactured by a major OEM company, ensuring longer reliability and peace of mind.

  • Company:サクル
  • Price:Less than 10,000 yen
  • DC Power Supply
  • AC adapter

Added to bookmarks

Bookmarks list

Bookmark has been removed

Bookmarks list

You can't add any more bookmarks

By registering as a member, you can increase the number of bookmarks you can save and organize them with labels.

Free membership registration

AC adapter 9V 0.5A maximum output 4.5W center negative

We handle various types of AC adapters.

● 4.5W, ultra-compact AC adapter, center negative ● Obtained global safety certifications (PSE, UL, CE) ● Compliant with tracking resistance tests and glow wire flammability tests ● Built-in insulated transformer despite its small size ● Wide input compatibility (AC100-240V) ● Manufactured by a major OEM, providing longer peace of mind for use.

  • Company:サクル
  • Price:Less than 10,000 yen
  • DC Power Supply
  • AC adapter

Added to bookmarks

Bookmarks list

Bookmark has been removed

Bookmarks list

You can't add any more bookmarks

By registering as a member, you can increase the number of bookmarks you can save and organize them with labels.

Free membership registration

AC adapter 9V 0.5A maximum output 4.5W center positive

We handle various types of AC adapters.

● 4.5W, ultra-compact AC adapter, center positive ● Obtained global safety certifications (PSE, UL, CE) ● Compliant with tracking resistance tests and glow wire flammability tests ● Despite its small size, it contains an insulated transformer ● Wide input compatibility (AC 100-240V) ● Manufactured by a major OEM company, ensuring longer reliability and peace of mind.

  • Company:サクル
  • Price:Less than 10,000 yen
  • DC Power Supply
  • AC adapter

Added to bookmarks

Bookmarks list

Bookmark has been removed

Bookmarks list

You can't add any more bookmarks

By registering as a member, you can increase the number of bookmarks you can save and organize them with labels.

Free membership registration

61558 Suitable AC Adapter Multi-country Wall Mount Type [6W]

6W AC adapter for home appliances and toy products. Interchangeable AC pins.

◇Certified AC adapter according to IEC/EN 61558-1; IEC/EN 61558-2-16; IEC/EN 60335 ◇Certified AC adapter with CE EN55032, EN55024, FCC ◇Low noise, stable output ◇100% burn-in conducted ◇Complies with CEC, DoE Level VI, ErP Stage 2, CoC Tier 2, GEMS ◇Complies with WEEE / ROHS 2.0 / REACH 2.0

  • Kiosk terminal
  • AC adapter

Added to bookmarks

Bookmarks list

Bookmark has been removed

Bookmarks list

You can't add any more bookmarks

By registering as a member, you can increase the number of bookmarks you can save and organize them with labels.

Free membership registration

Lithium battery charging AC adapter, desktop type [50W]

50W AC adapter for products equipped with lithium batteries. Desktop type, AC inlet IEC-C8 & IEC-C14 & IEC-C6.

The long-established power supply manufacturer ENG provides reliable AC adapters. These AC adapters comply with PSE (Electrical Appliance and Material Safety Law) certification. ◇ AC adapters certified to IEC/EN 61558-1; IEC/EN 61558-2-16; IEC/EN 60335 ◇ AC adapters certified to CE EN55032, EN55024, FCC ◇ Low noise, stable output ◇ 100% burn-in conducted ◇ Compliant with CEC, DoE Level VI, ErP Stage 2, CoC Tier 2, GEMS ◇ Compliant with WEEE / ROHS 2.0 / REACH 2.0

  • Kiosk terminal
  • AC adapter

Added to bookmarks

Bookmarks list

Bookmark has been removed

Bookmarks list

You can't add any more bookmarks

By registering as a member, you can increase the number of bookmarks you can save and organize them with labels.

Free membership registration

UNUBY3006 | 6W USB AC Adapter

6W class USB AC adapter. For power selection and specification consultation based on requirements.

UNUBY3006 is a USB-type AC adapter with an output of 6W. Its compact size makes it highly portable, and it complies with the American DOE VI energy efficiency standard, allowing for efficient use. We also accept customizations tailored for more B2B applications, in addition to general consumer specifications. You can consult us for power selection, specification adjustments, and customizations based on the standard model. Availability, specifications, quantities, and delivery times will be confirmed individually. For detailed conditions and product catalogs, please check the official product page linked in the related links.

  • DC Power Supply
  • AC adapter

Added to bookmarks

Bookmarks list

Bookmark has been removed

Bookmarks list

You can't add any more bookmarks

By registering as a member, you can increase the number of bookmarks you can save and organize them with labels.

Free membership registration

UUA311 | AC Adapter

For detailed specifications and documentation of UUA311, please visit the official website. Feel free to consult us for power supply selection tailored to your requirements.

UUA311 is an AC adapter from Unifive. Please check the specifications section for the type and conditions of the output. For detailed specifications and datasheets, please visit the official product page linked below. https://www.unifive.com/products/standard/category/standard/12w/uua311.html You can consult us for product selection and specification adjustments tailored to the requirements of your equipment, using the standard model as a starting point for design. For inquiries about evaluations, samples, or quotes, please contact us through the official website. Please provide the required voltage, current, embedded space, usage environment, applicable standards, and planned quantities. We will confirm the feasibility, quantities, and delivery times individually.

  • DC Power Supply
  • AC adapter

Added to bookmarks

Bookmarks list

Bookmark has been removed

Bookmarks list

You can't add any more bookmarks

By registering as a member, you can increase the number of bookmarks you can save and organize them with labels.

Free membership registration

UU111 | AC Adapter

For detailed specifications and documentation of UU111, please visit the official website. Feel free to consult us for power supply selection tailored to your requirements.

UU111 is the AC adapter from Unifive. Please check the specifications section for the type and conditions of the output. For detailed specifications and datasheets, please visit the official product page linked here: https://www.unifive.com/products/standard/category/standard/12w/uu111.html You can consult us for product selection and specification adjustments tailored to your equipment's requirements, using the standard model as a starting point. For inquiries regarding evaluation, samples, or quotes, please contact us through the official website. Please provide the necessary voltage, current, embedded space, usage environment, applicable standards, and planned quantities. We will confirm availability, quantities, and delivery times individually.

  • DC Power Supply
  • AC adapter

Added to bookmarks

Bookmarks list

Bookmark has been removed

Bookmarks list

You can't add any more bookmarks

By registering as a member, you can increase the number of bookmarks you can save and organize them with labels.

Free membership registration

UUF311 | AC Adapter

For detailed specifications and documentation of UUF311, please visit the official website. Feel free to consult us for power supply selection tailored to your requirements.

UUF311 is an AC adapter from Unifive. Please check the specifications section for the type and conditions of the output. For detailed specifications and datasheets, please visit the official product page linked below. https://www.unifive.com/products/standard/category/standard/12w/uuf311.html You can consult us for product selection and specification adjustments tailored to your equipment's requirements, using the standard model as a starting point for design. For inquiries regarding evaluation, samples, or quotes, please contact us through the official website. Please provide the necessary voltage, current, embedded space, operating environment, applicable standards, and planned quantities. We will confirm the feasibility, quantities, and delivery dates individually.

  • DC Power Supply
  • AC adapter

Added to bookmarks

Bookmarks list

Bookmark has been removed

Bookmarks list

You can't add any more bookmarks

By registering as a member, you can increase the number of bookmarks you can save and organize them with labels.

Free membership registration

UUG311 | AC Adapter

For detailed specifications and documentation of UUG311, please visit the official website. Feel free to consult us for power supply selection tailored to your requirements.

UUG311 is an AC adapter from Unifive. Please check the specifications section for the type and conditions of the output. For detailed specifications and datasheets, please visit the official product page linked here: https://www.unifive.com/products/standard/category/standard/12w/uug311.html You can consult us for product selection and specification adjustments tailored to your equipment's requirements, using the standard model as a starting point for design. For inquiries regarding evaluation, samples, or quotes, please contact us through the official website. Please provide the necessary voltage, current, embedded space, usage environment, applicable standards, and planned quantities. We will individually confirm availability, quantities, and delivery times.

  • DC Power Supply
  • AC adapter

Added to bookmarks

Bookmarks list

Bookmark has been removed

Bookmarks list

You can't add any more bookmarks

By registering as a member, you can increase the number of bookmarks you can save and organize them with labels.

Free membership registration

UUL311 | AC Adapter

For detailed specifications and documentation of UUL311, please visit the official website. Feel free to consult us for power supply selection tailored to your requirements.

UUL311 is an AC adapter from Unifive. Please check the specifications section for the type and conditions of the output. For detailed specifications and datasheets, please visit the official product page linked below. https://www.unifive.com/products/standard/category/standard/12w/4.html You can consult us for product selection and specification adjustments tailored to your equipment's requirements, using the standard model as a starting point for design. For inquiries regarding evaluation, samples, or quotes, please contact us through the official website. Please provide the necessary voltage, current, embedded space, usage environment, applicable standards, and planned quantities. We will confirm the feasibility, quantity, and delivery time individually.

  • DC Power Supply
  • AC adapter

Added to bookmarks

Bookmarks list

Bookmark has been removed

Bookmarks list

You can't add any more bookmarks

By registering as a member, you can increase the number of bookmarks you can save and organize them with labels.

Free membership registration

UNXVX3024 | 24WAC interchangeable pin AC adapter

24W class AC pin exchangeable AC adapter. For power selection and specification consultation based on requirements.

The UNXVX3024 series is a 24W AC adapter with interchangeable AC pins that supports plugs from various countries, making it easy to expand into overseas projects. It adopts a high-efficiency design that meets global energy-saving requirements, including the European ErP Lot 7, and is flexible in accommodating small lot customizations and specification changes. Starting from the standard model, you can consult us for power selection, specification adjustments, and customizations tailored to your requirements. Availability, standards, quantities, and delivery times will be confirmed individually. For detailed conditions and product catalogs, please check the official product page linked in the related links.

  • DC Power Supply
  • AC adapter

Added to bookmarks

Bookmarks list

Bookmark has been removed

Bookmarks list

You can't add any more bookmarks

By registering as a member, you can increase the number of bookmarks you can save and organize them with labels.

Free membership registration

UNXVX3015 | 15WAC interchangeable pin AC adapter

15W class AC pin exchangeable AC adapter. For power selection and specification consultation based on requirements.

The UNXVX3015 series is a 15W AC adapter with interchangeable AC pins. It features a compact design for easy portability, and the AC pins are detachable, allowing for worldwide use with a single model. The series is equipped with various protection features and has obtained safety standards from different countries. Starting from the standard model, we can discuss power selection, specification adjustments, and customizations according to your requirements. Availability, specifications, quantities, and delivery times will be confirmed individually. For detailed conditions and product catalogs, please check the official product page linked in the related links.

  • DC Power Supply
  • AC adapter

Added to bookmarks

Bookmarks list

Bookmark has been removed

Bookmarks list

You can't add any more bookmarks

By registering as a member, you can increase the number of bookmarks you can save and organize them with labels.

Free membership registration

UNUBU3006|6W USB AC Adapter

6W class USB AC adapter. For power selection and specification consultation based on requirements.

UNUBU3006 is a compact USB-type AC adapter with an output of 6W, achieving excellent portability. It complies with the latest U.S. energy efficiency standards DoE VII and the European efficiency standards ErP Lot 7, featuring an environmentally friendly design. In addition to general consumer specifications, it offers flexible customization and semi-custom options tailored for BtoB applications. We provide optimal solutions based on customer needs, contributing to operational efficiency and enhancing product value. Starting from the standard model, you can consult us for power selection, specification adjustments, and customizations according to your requirements. Availability, standards, quantities, and delivery times will be confirmed individually. For detailed conditions and product catalogs, please check the official product page linked in the related links.

  • DC Power Supply
  • AC adapter

Added to bookmarks

Bookmarks list

Bookmark has been removed

Bookmarks list

You can't add any more bookmarks

By registering as a member, you can increase the number of bookmarks you can save and organize them with labels.

Free membership registration

UMDNB3015 UM

15W class medical AC adapter. For power selection and specification consultation based on requirements.

UMDNB3050 is a 15W AC adapter specifically designed for medical devices, featuring a compact design with a 3-pole AC inlet. It complies with 2MOPP for patient protection and 2xMOOP for operator protection. Additionally, it has received IEC60601-1 and PSE certifications. You can consult us for power selection, specification adjustments, and customizations based on the standard model to meet your requirements. Availability, specifications, quantities, and delivery times will be confirmed individually. For detailed conditions and product catalogs, please check the official product page linked in the related links.

  • DC Power Supply
  • AC adapter

Added to bookmarks

Bookmarks list

Bookmark has been removed

Bookmarks list

You can't add any more bookmarks

By registering as a member, you can increase the number of bookmarks you can save and organize them with labels.

Free membership registration

SUE318 | AC adapter compatible with a wide temperature range

For detailed specifications and documentation of SUE318, please visit the official website. Feel free to consult us for power supply selection tailored to your requirements.

SUE318 is a wide temperature range AC adapter from Unifive. Please check the specifications section for details on the type and conditions of output. For detailed specifications and datasheets, please visit the official product page linked here: https://www.unifive.com/products/standard/category/wide_operating_temperature/12w/sue318.html You can consult us for product selection and specification adjustments based on the standard model as a starting point to meet your equipment's requirements. For inquiries regarding evaluation, samples, or quotes, please contact us through the official website. Please provide the necessary voltage, current, embedded space, operating environment, applicable standards, and planned quantities. We will confirm the feasibility, quantity, and delivery time individually.

  • DC Power Supply
  • AC adapter

Added to bookmarks

Bookmarks list

Bookmark has been removed

Bookmarks list

You can't add any more bookmarks

By registering as a member, you can increase the number of bookmarks you can save and organize them with labels.

Free membership registration

SUK318 | AC adapter compatible with a wide temperature range

For detailed specifications and documentation of SUK318, please visit the official website. Feel free to consult us for power supply selection tailored to your requirements.

The SUK318 is a wide temperature range AC adapter from Unifive. Please check the specifications section for the types and conditions of output. For detailed specifications and datasheets, please visit the official product page linked here: https://www.unifive.com/products/standard/category/wide_operating_temperature/12w/suk318.html You can consult us for product selection and specification adjustments tailored to your equipment's requirements, using the standard model as a starting point. For inquiries regarding evaluation, samples, or quotes, please contact us through the official website. Please provide the necessary voltage, current, embedded space, operating environment, applicable standards, and planned quantities. We will confirm the feasibility, quantities, and delivery times individually.

  • DC Power Supply
  • AC adapter

Added to bookmarks

Bookmarks list

Bookmark has been removed

Bookmarks list

You can't add any more bookmarks

By registering as a member, you can increase the number of bookmarks you can save and organize them with labels.

Free membership registration