The load should make almost no difference up to >100mA load.
The voltage change you see is down to the highish dynamic resistance of a zener.
A TL431 would be better.
But it'll do. +/- 10% is good enough .
Allan
The load should make almost no difference up to >100mA load.
The voltage change you see is down to the highish dynamic resistance of a zener.
A TL431 would be better.
But it'll do. +/- 10% is good enough .
Allan