replacement transformer wanted for IMSAI power supply

From: Eric Smith <eric_at_brouhaha.com>
Date: Sun May 9 18:17:43 1999

The transformer in my IMSAI's power supply is not long for this world.
Yesterday I discovered that even with only the CPU card, one memory card,
and the front panel installed, the transformer got *very* hot in just a few
minutes, and started emitting unpleasant smells.

Is there any suitable replacement that is still manufactured? Or, failing
that, does anyone have a spare for sale?

If all else fails, I suppose I could install some VICOR switching power supply
modules. It looks like a VI-HAM input module would be required, along with a
pair of VI-263-EU modules to provide +/-18V at 8.3A, and a VI-26M-EU with a
VI-B6M-EU to provide +8V at 40A. This would have the advantage of autoranging
power-factor-corrected input, reduced heat dissipation, and the front panel
switch could be used as a low-voltage control to the switchers rather than
having live AC present. On the down side, it wouldn't be particularly
historic, and it would be extremely expensive.
Received on Sun May 09 1999 - 18:17:43 BST