[sdiy] voltage reference advice

[Justin Owen]

-----Original Message-----
From: Paul Perry [pfperry at melbpc.org.au]

> If you need a voltage of known high precision, then you need a precision 
diode or other reference voltage of some kind.
That isn't what a power regulator is designed for.

What reasons are there for not using a decent, well-trimmed Vreg as a Vref?

What specs do they fall down?

Thanks.

Justin