[Amps] Bias Zener Diodes In Parallel ?

[wd7s@att.net (PAUL HEWITT)]

Adjustable yes, but you don't have to
change taps, just apply current through
the string and it's voltage drop wanders
all over the place.  For voltage
stability this is the worst way to
provide bias.  TL-431, adjustable and
rock solid voltage.
Paul

PAUL HEWITT
WD7S PRODUCTIONS
QRO HOMEBREW COMPONENTS
http://wd7s.home.att.net


>
> The problem with a 50w zener
> is that its Vz is not adjustable.  A
> fwd-biased Si diode string
> can be adjusted by changing taps.