[sdiy] Generating +5V gate signals from +3.3V logic

[Steve Lenham]

>> Use the opamp, but put the current-limiting/protection resistor
>> inside the feedback loop (think this was discussed recently in
>> another thread). Then the output remains constant with varying load
>> (within reason) but the driving device is still protected.

> Thanks Steve. I remember the conversation. Does it still work with a
> non-inverting op-amp? I remember all the examples being inverting.
>
> Tom

I don't see why not - feedback works the same way in both cases.

After all, if you treat ground as a second input signal rather than a 
fixed point, the two circuits (inverting and non-inverting) are the same.

Cheers,

Steve L.