[sdiy] zener question

[Michael Buchstaller]

>If you need something well regulated with a fair amount of current (over
>50mA or so), you should go to an adjustable voltage regulator - like the
>uA723, or LM317 (positive reg) and LM337 (negative reg).  With heat
>sinks you can get up to 1 amp out of these, 100mA with no heat sink.

personally, i would always go the voltage regulator route - 7809/7909
are extremely cheap and will do the trick without any worrying about
how much current the circuit draws (in terms of a few 100 mA, of course)


-Michael Buchstaller