Hi,
I have bought and built electronic devices that use a battery as a power supply. I don't mean portable devices but stationary. How good are batteries as power supplies?
Thanks, Gary
Batteries As Power Supplies
Nov 22, 2011
5 Replies
Are you Abby or Gary?
As far as your question, as usual, it depends. What is it you're trying to accommplish?
Thanks, Rich
Very good power line isolation.prevent ground loops.
Greg
It makes the power supply the part that sets maintenance or replacement intervals. The weakest link in reliability. This can be an issue.
RL
Hi Ken, VTVM =3D Vacuum tube volt meter? (I've never used one... I've never used a weston cell for that matter....) So a battery gives you a few percent test calibration?
The voltage reference IC's are pretty darn good. (REF02 or REF102... etc.)
George H.
I rescued the Weston cell out of an old Fluke model 801 voltmeter. I put it in its own little box and I've checked a few of my meters against it from time to time.
Paul Hovnanian mailto:Paul@Hovnanian.com
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