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You can feed a bridge rectifier with ac or dc. The only problem is when feeding it with dc two of the diodes are 100% duty cycle and the other two are 0% so it might burn up. When fed with ac all four diodes are 50% duty cycle.

The dorcey flashlight does have a driver circuit built in already. I did some testing on it with different loads and it acts as a current regulator that maintains a constant 330mA. Do I really need a larger cap? Anybody else have an opionion about the cap?

Thanks. I think 160 is the point of diminishing returns and I wanted a laser i could have on continuously. Also I live in florida and the ambient temp is quite warm here. I'm sure I could crank it up to 200 but I'd rather not risk burning it out. It lights matches and fireworks and pops balloons...

Here's a pic of my first one. It uses the same circuit but with a 20ohm resistor and no peltier obviously. The resistor is just to lessen the current through the diode because the dorcey puts out about 330ma. I thought the round copper heat sink was enough but it burned out after about an hour...

Here's the circuit I used for this.

Check out my new laser(s). This has got to be the most overkill GB laser ever built. Peltier cooling, custom machined aluminum and copper heat sinks, fits entirely inside flashlight without removing window. I'm running 160ma through the diode and it stays cool to the touch after minutes of...

First off this is my first post and hello everyone! Here's a table I made for different loads on the charge pump current regulator in the 41-4262 dorcy 1 watt LED flashlight Load Current(mA) Voltage 8.11ohm 350 2.85 9.08ohm 350 3.07 10ohm 340...