11 Oct
2015
11 Oct
'15
10:17 a.m.
The bias voltage is generated by the chopper on page three in conjunction
with T1 and some rectifying diodes on the motherboard. Then it is feed back
to the bias board on J2:2 to produce the 5V. (page 2)
Yes...
It's not totally obvious at first glance, but this is yet another SMPSU with the
chopper on the Bias/Interface board. The transformer on the baseboard is
not a mains-frequency one.
-tony