Everything works fine when it is plugged in, it stays at 120VAC, when it
looses power during a power outage (or if you just simply unplug it) it
immedietly plummets to 106VAC and then keeps dropping until the battery
goes dead.

After plugging it back for a while the battery recharges and stays
around 12.8VDC, even after being unplugged and removed from the case the
battery still stays charged at just over 12 volts. The windings in the
transformer appear to be fine (visually and when ohm tested), nothing is
obviously burnt or smells burnt.

The windings for the transformer have 12 volts going to the center tap
and then each size of the center tap is turned off/on with the two
mosfets to simulate AC voltage, they are in turn driven by an LM324N,
both gates of the Mosfets have about 2.5 volts on them but I have no
idea what the wave form looks like.


-Landon

loedown wrote:
What symptom is the unit showing?

Paul