Power Supply / Charger
Power supply products are widely used as necessary accessories of other devices. HTW, has been focused on the testing and certification services in an early time, and we were certified as an IECEE CBTL. All these ensure our efficiency and accurate testing capability.
Testing We Offer
Power Supply & Charger We Test To
Standards We Test To
HTW Testing and Certification Solutions.
1. The reason of radiation test failed
There are many reasons for EMC radiation tests failed according to the standard, such as interface filtering, cable design, grounding, shielding etc. Generally speaking, it is the problem of PCB design. For TCB, a multilayer board is a recommended choice, as it can reduce impedance. The circuit on the PCB board is required to be straight and short.
2. The problems of product information
Label, Schematic, User manual, CDF/BOM, PCB layout
ISO 17025, CMA, CNAS , IEC CBTL, US UL, A2LA, FCC, TIMCO, CEC, DOE, Germany TUV, EMCC, Japan VCCI, Norway DNV, NEMKO, UK ITS, Canada IC, Hong Kong EMSD and other qualifications have been obtained.
Test items (Safety)
Input Current Test
Label Wiping Test
Energy Level Test
Current-Limiting Circuit Test (LCC)
Power-Limiting Test (LPS)
Ground Continuity Test
Temperature And Humidity Test
Impact And Other Mechanical Stress Tests
Ball Pressure Test
Normal Temperature Rise Test
Touch Current Test
Withstand Voltage Insulation Test
Component Failure Test, etc.
Test items (EMC)
Voltage Fluctuations And Flicker Test
Static Electricity Test
Power Frequency Magnetic Field Test
Voltage Sag Test, etc.
Test Items (others)
1. For external power supply:
ERP, CEC, DOE, NRcan, MPES, China Energy efficiency
2. For battery charger:
62471: Photobiological safety of lamps and lamp systems
62471-5: Photobiological safety of lamps and lamp systems – Image projectors
60825-1: Equipment classification and requirements