Receiver Power Supplies

Abstract

The power requirements of the various sections of TV receivers are at differing voltage levels, depending on the function of the circuit to be supplied. In fully transistorised as well as hybrid (valve and transistors) receivers relatively low voltages are supplied to the circuits which handle small amplitude signals. Large amplitude waveforms can only be accommodated if the amplifier is connected to a suitable high voltage feed. Valves, by virtue of their principle of operation, need relatively high anode (and screen where applicable) potentials, irrespective of their circuit functions. The voltage levels used on the picture tube electrodes vary from low voltage on the heater to the extra-high tension on the final anode.