CircuitLab simulation

[Demon]

If you can accomodate some simulation inaccuracies, I suggest you try this circuit simulator. ...

Thanks, I'll keep that one in mind if I ever try to simulate a circuit again.


I had tried using that PWM board (FR120N, LR7843, D4184), but it the COB LED wouldn't completely turn off and I was stuck with flicker. I had tried ILD2 and LTV-825 opto-couplers, but I was serious trouble balancing the circuit (I can't remember the exact problems, but I couldn't get it to work as desired - full OFF/ON, 300mA range for COB LED, etc).

I ended up with a IRFZ44N MOSFET driven by PWM from a PIC, with 1K on the gate; looks bullet-proof, low cost, minimal parts and super simple. Best part, it is driven from a PIC, so it's a snap reproducing the same lighting on the 2nd enclosure. These FETs can take insane voltages/amps (I'm only working with logic circuits).

Small victory.