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Electronic and electrical testing

Date of issue:2020-05-13

 It information

 
With the advent of the network era, it has become an indispensable part of people's life, and its security, electromagnetic compatibility and harmful substances and other related issues have become the focus of attention of manufacturers and consumers. Long term focus on information and information products testing and certification services, efficient and accurate rectification capabilities to ensure the majority of customers information and information products use safety.
 
Certification requirements of information products in different countries
 
Common products
 
1. Personal computer
 
2. Server
 
3. Computer peripheral equipment
 
4. Display, monitoring and projection equipment
 
5. Printer
 
6. Communication equipment and system
 
7. Network access, relay and terminal equipment
 
8. Photoelectric and optical transmission equipment
 
9. Modem
 
10. Power adapter and power equipment
 
11. Network terminal equipment

AV audio and video
 
CRT TV, LCD TV, rear projection TV, home theater, speaker, stereo, power amplifier, video recorder, karaoke machine, disc player, DVD, VCD, EVD, MP3, MP4, MP5, recorder, radio, recorder, game player, answering machine, headset, headset, microphone, loudspeaker, car player, digital camera, digital camera, cassette player, repeater , song player, car DVD, vehicle MP4, projection screen, monitor, subwoofer, Walkman, car monitor, loudspeaker, microphone, multimedia video, indoor sound column, USB entertainment video stick, headrest DVD, phonograph, learning machine, car mounted advertising machine, digital photo frame, electronic organ, electric guitar, automatic record player, CD player, CD recorder, etc.
 
International regulations related to product certification
 
According to the functions, audio-visual products should comply with safety, electromagnetic compatibility, wireless spectrum and other aspects. For laser products, laser safety needs to be considered; FDA also needs to consider the safety of infrared products.
 
GB 8898 safety of sound and television broadcasting receivers and related equipment
 
GB 13837 allowable values and measurement methods of interference characteristics of sound and television broadcasting receivers and related equipment
 
GB 17625.1 limits of harmonic current emitted by low voltage electrical and electronic equipment (equipment input ≤ 16A per phase)
 
UL 60065 Audio, Video and Similar Electronic Apparatus – Safety Requirements
 
FCC PART 15 Radio Frequency Devices
 
CSA C22.2 NO 60065-99 Audio, Video and Similar Electronic Apparatus – Safety Requirements
 
BETS-7 Technical Standards and Requirements for Radio Apparatus Capable of Receiving Broadcasting
 
IEC 60065 Audio, video and similar electronic apparatus — Safety requirements
 
IEC/CISPR 13 Sound and television broadcast receivers and associated equipment - Radio disturbance characteristics - Limits and methods of measurement
 
IEC/CISPR 20 Sound and television broadcast receivers and associated equipment –Immunity characteristics –Limits and methods of measurement
 
EN 60065 Audio, video and similar electronic apparatus — Safety requirements
 
EN 55032 Limits and methods of measurement of radio disturbance characteristics of broadcast receivers and associated equipment
 
EN 55035 Sound and television broadcast receivers and associated equipment -Immunity characteristics -Limits and methods of measurement
 
J 60065 オオ゘ディオ、ビオ and びびののヒののヒオオオディオ、ビオびび
 
J 55013 audio and video transmission
 
The permissive permittivity of wireless interference and its measurement method
 
AS/NZS 60065 Audio.video and similar electronic apparatus - Safety requirements
 
AS/NZSCISPR13 Sound and television broadcast receivers and associated equipment - Radio disturbance characteristics - Limits and methods of measurement

Light source / LED lighting products
 
Bright lights bring us light and warmth, and convey infinite beauty for us. However, in the diversified market environment, the safety of lamps and lanterns has become a problem that we should always be alert to. Facing different certification requirements and standards, our expert team provides special solutions for lamp manufacturers to meet the legal and regulatory requirements of the target market.
 
1. International CB Report
 
2. EU CE, ROHS, reach
 
3. GS certification in Germany
 
4. UL, ETL, FCC, energy star certification
 
5. CCC certification and quality inspection report of China
 
6. Other international certification

Household appliances
 
As a widely used scientific and technological product, household appliances occupy an important position in people's life. While bringing convenience to our life, there are also many hidden problems. Keyuan Hengtai testing expert team has long been focusing on the testing of electronic and electrical products, providing high-quality and high-efficiency rectification and testing services such as EMC, hazardous substances, safety regulations, environmental energy efficiency, etc.
 
1. International CB Report
 
2. EU CE, ROHS, reach
 
3. GS certification in Germany
 
4. UL, ETL, FCC, energy star certification
 
5. China CCC certification
 
6. Other international certification

Power products
 
Power supply, generally known as power adapter, can be divided into boost or buck if it is distinguished by output voltage; it can be divided into traditional linear adapter / power supply or switching adapter / power if it is distinguished by design technology According to the final application location, it can also be divided into stand-alone or built-in; finally, it can be divided into AC to AC, AC to DC, DC to AC, and DC to DC if the final application location is used.
 
According to the application scope, the common power supply in the market can be divided into the following types:
 
■ information / communication: used in video and audio information or communication products. Such as LCD monitor, scanner, printer, fax
 
Machine, modem digital camera, etc;
 
■ audio and video products: used in the power supply of audio-visual products, such as CD player, DVD player, recorder, game player, LCD TV, etc;
 
■ general use: if the power supply for general purpose is not specified, it is mostly used in household appliances;
 
■ charger: generally refers to chargers for general rechargeable batteries, such as mobile phone or digital camera professional chargers. Manufacturers will consider classifying this type by information products;
 
■ power inverter: it refers to products with low input (such as 12VDC connected with vehicle battery) and output of high voltage 120VAC or 230cac.
 
■ uninterruptible power supply: rectifying the mains power to DC, then inverting to AC output; charging the battery at the same time. In case of power interruption, DC output for battery will be converted into AC output to equipment automatically. The English abbreviation is ups.
 
International regulations related to product certification
 
The power supply reduces the mains power supply or raises the low voltage to the mains voltage. Therefore, there are two versions of 100-120vac and 200-240Vac. Most of the small-sized power supplies are designed to be directly inserted into the wall. If the products are planned to be sold worldwide, many plug types should be considered.
 
Power supply regulations usually meet the requirements of safety and electromagnetic compatibility (EMC). The safety specifications are more complex. Electromagnetic compatibility will have more trouble only when switching power supply, while linear power supply seldom has EMC problems.
 
When the power supply supplies power to different products, the regulations and standards that should be complied with are also different. In principle, the laws and standards to be complied with are determined by the products to be used with

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