I fixed a China Torch with New LEDs and a Diode, it failed probably on a drop shock, the battery wire cut … then when put on charge Few LEDs went bad, as battery was absent in ckt. The Success of the LED Lamp design review - 1.5uF voltage rating can… more »
Posted by dapj20 on May 09, 2020 in LED-Lighting, Schoodles
Lots if Light on One Watt, yes this works, but should be built by those experienced in High Voltage usage and Knowledge of insulation techniques. Home Made Circuits. This has to be encapsulated in a insulated fire retardant plastic enclosure. You can… more »
A typical Mains Powered China Lamp. On power down, LED light turns on for around 1/2 hr. Gets damaged on lightning activity and wide (uS not nS) transients above 300V. Drawing may have error. Many products and components were made over the last 10 years… more »
Posted by dapj20 on Jun 17, 2019 in Computers-PC-DIY, Schoodles
Many people give up on Wireless Keyboard Mouse Combo after a few months of "Novelty". This is due to the chore of replacing batteries and also the cost and wastage (carbon foot). Then i have long been suggesting since nineties, ferrite smps coupled… more »