3v OU Flashlight

[Hoppy]

Do you find the V_CE Max = 40V interesting?

And the 7mA needed to get the output switch to conduct.

[conico]

Verpies, What Mos-fet did you used? I used an IRFZ44n and it didn't work.

[TinselKoala]

Verpies, What Mos-fet did you used? I used an IRFZ44n and it didn't work.

Didn't work, how? Did it not switch, did it blow from overvoltage, did it pop open and let the white smoke out.... or what?

Or did it "not work" simply by shutting off the LEDs when the power was removed? Good luck finding one that does "work" in this manner!



@Verpies, what do you see at Pin 12 of the hex inverter chip, the mosfet Gate? Can you take a scopeshot there?



ETA: What happens to my IRFZ44ns when they don't work:

[avalon]

@PW.

Thank you for your post.
The truth is that I, practically, never use my DS203. It's a dinky little thing but I found hunting through some 4 buttons and 2 knobs tiring.
It is, however, a very convenient tool to quickly snap a signal and store it.  That was exactly what I did. I only cared about the input and didn't setup anything else.

All the best,

~A

[verpies]

Verpies, What Mos-fet did you used? I used an IRFZ44n and it didn't work.

Ask Akula.  That's his circuit - not mine.