"Not necessarily ... "

Yes, under certain circumstances you can connect LEDs directly.


"Again, not necessarily: you can build a voltage regulator from discrete components (possibly including op-amps) if you want to!"

*uff* ... Yeees, if you want to, but in general ...


"Taner beat us both to it!"

His answer was already there, as I started writing. Yours was not. So we "competed" directly.

Jörg