Mill 2 bypass voltage.

[digi2t]

Just wondering out loud. I've only ever seen Mill2 bypass drawn out using 9v supply voltage, but what about using it on 12v or 18v? Would one simply up the resistor values, or is there some other aspect of the circuit that would require modification for use with higher voltage source?

[duck_arse]

just thinking out loud, I'd say stay within the mosfet V limits, and it's only the led current limit resistor to worry about.

[digi2t]

just thinking out loud, I'd say stay within the mosfet V limits, and it's only the led current limit resistor to worry about.

That's what I figured as well duck, but I find that just when I get too comfy about my situation, is where it ends up exploding in my face. I was just looking to validate my thought before I leap into it. Both BS170 or 2N7000 would seem to be capable in this case.

[R.G.]

There are two voltages to worry about. These are the breakdown voltage from drain to source, and the breakdown of gate to source. They're in the datasheet. OnSemi says their 2N7000G is good for 60V drain to source and 20V gate to source. 18V ought to be OK.

Actually, you could tinker the gate pullup somewhat if you were careful, so it would be less than the full power supply, since, as noted, this just works the LED.

[digi2t]

There are two voltages to worry about. These are the breakdown voltage from drain to source, and the breakdown of gate to source. They're in the datasheet. OnSemi says their 2N7000G is good for 60V drain to source and 20V gate to source. 18V ought to be OK.

Actually, you could tinker the gate pullup somewhat if you were careful, so it would be less than the full power supply, since, as noted, this just works the LED.

Thanks for the confirmation and tip R.G..