... :>20000 hours11. small size, high efficiency design 12. adopt with high efficiency, low power wastage, stabilize PWM chip can reach ... Compact size, light weight.100% full-load burning test.Installed with EMI filter, minimum wave. products:transformer, switch power supply, ... , low frequency transformer, R type transformer, ferrite cores series,,micro-type mutual inductor,inverter, type EI,type R and type ...