My bread boards have arrived at last, and I can start on my latest project. I want to build a controller for some high-wattage LEDs. After reading about how the circuit works I decided to give it a short. I ordered an LED controller, some FETs, coils, diodes, capacitors and load resisters. The controller will run directly from 120 VAC, and here is the first state. A thermistor
feeds AC into a bridge rectifier
. This creates full-wave rectified DC power that then feeds into a filter capacitor. I put a 100 k resister across the cap for a small load, and sure enough I now have 170 volts of clean DC power. The thermistor is to keep the inrush current for when the circuit first turns on to a tolerable level
There is a lot of power available here, which is why I am doing this test. The initial test will run a 10 watt LED, but I have been looking at 30 and 100 watt LED chips. Running these devices directly from 170 VDC is the most efficient method to power them. And if I have success Xiphos and I have some projects in mind we can do.