User's Manual

Technalogix Ltd TAVD-500 Transmitter
VII-1
Section VII – Mechanical Section
The heat sinks allow the amplifiers to operate at a cooler temperature and prevent overheating,
which helps the longevity of the entire system. Each heat sink has hollow fins, which help
dissipate the heat from the amplifiers faster than a conventional serrated or corrugated fin.
In addition to the cooling effects of the heat sinks, within the 500-watt power amplifier enclosure,
there are six fans that each provide 170 cubic feet per minute (CFM) of air flow (into zero static
pressure). There are three fans mounted at the front of the heat sink and three mounted at the
back end of the heat sink. The fans are mounted side-by-side to produce the best cooling for
the system and are operating in a push-pull configuration to assist with heat dissipation. The
fans are a 24Vdc variety, so there are series dropping resistors to drop the higher power supply
voltage down to a safe level.