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 28.3 Vdc nominally.
The power supply is a Lambda SWS-600-36. 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.