Altair 680 power supply...
dkelvey at hotmail.com
Sun Jan 17 10:46:51 CST 2010
I just came on an unusual problem. I'm fixing a
power supply with +12 and +5 outs. It uses 2
723 regulators. The one on the +12 was blown.
I bought another 723 regulator and it didn't
seem to be working.
I checked the voltages and noticed that the
5 volt one that is working fine, has a Vref of
about 3 volts while the new one has a Vref
of 7 volts.
Looking at the specs, it is suppose to be 7 Volts.
Looking at the resistors on the board, the
board expects 3 volts.
Has anyone seen these with different reference
I'll have to change the feedback resistors ( not
a big deal ) but this is a strange one.
Hotmail: Trusted email with Microsoft’s powerful SPAM protection.
More information about the cctech