Marconi MkIX Television Camera CCU main power supply

The main channel power supply. It is a complex unit with two independent switching supplies with multiple outputs. One supplies the camera and the other the CCU. Both switchers use a +300V common mains rectifier input circuit.

When the MkIXp companion portable is used, connecting directly to the CCU, the camera outputs are changed by reversing a "link PCB" and adding extra regulator PCBs in the PSU. (not always fitted)