User's Manual

V-1
Section V – Power Supply
Switching AC-DC power supplies are used to power the amplifier pallets, the control circuits, and all
of the fans. There is (1) power supply used to generate the necessary current for the amplifier
pallets, set to 30 Vdc nominally.
The power supply is a Cotek-800S-P. This switching power supply is fully protected against short
circuit and output overload. Short circuit protection is a cycling type power limit. The internal AC
fuse is designed to blow only on a catastrophic failure in the unit – the fuse does not blow on
overload or short circuit. The thermal shutdown automatically recovers when the power supply
chassis cools down.
AC is fed into the enclosure via a filtered EMI AC entry. It is then current limited with a resettable
circuit breaker before passing through a rocker switch. This switch turns the AC on and off to the
switching power supply.
TAV-250