User's Manual

Technalogix Ltd TAUD-1000 Transmitter
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 are switching supplies in the Power Supply enclosure that feed all of the amplifier
pallets and fans inside each of the two TAUD-500 amplifier enclosures that make the 1,000-watts
RMS. In addition, the Combiner/Filter enclosure has a small switching supply to feed the control
circuitry in that enclosure.
The power supplies found in the Power Supply enclosure are (2) Meanwell RSP-3000-48. The
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 (220Vac) is fed
into the power supply enclosure via a resettable circuit breaker. The power supplies are set at
48.0Vdc nominally. All fans in the Power Amplifier enclosure run off this same supply.
The power supply found in the Combiner/Filter enclosure is a Meanwell S60-24. It powers the
control PCBS in the Combiner/Filter enclosure. Its output voltage is set to 24.0 Vac.