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This is a
single 25 Channel Driver Unit.
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Its front panel
indicates what quadrant and what standoffs it drives.
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The rear panel
shows its input from the Controller Unit, and its output to the Peltier
devices on the dish. There is
also its cable from 2 (100A ea.) power supplies.
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The Driver Unit
houses 25 power amplifiers mounted on a large heatsink plate. This heatsink plate is dual air and
liquid cooled because of the number of amplifiers I mounted on it, plus its
operation at altitude.
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(Early pics of
amplifier boards and heatsink plate.
They are a bit different now.)
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~Melanie Leong~
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