This link might be helpful if your supply uses a UA723 regulator like
the Astron. It show an Astron schematic with a minor mod to allow float
charging a battery without concern if the AC power fails. The mod
involves cutting a circuit trace at pin 4 of the UA723 and bridging the
break with a 10K resistor.
https://ntc.cap.af.mil/images/rs-bat-mod.jpg
Dick, K0KK
[EMAIL PROTECTED] wrote:
Hi all,
A diode was my first try, but there are several problems with that approach.
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