Pulse coded control signal receiver - extracts remote control signals from power distribution network using relays to prevent response to interference

摘要

The receiver, for pulse-coded remote control signals passing via a power distribution network, has two relays (R, R') with independently adjustable response thresholds. The contact (r) of one relay (R) switches the synchronous selector and the contact (r') of the other relay switches the instruction release associated with the selector. The first relay is located in the collector circuit of a directional amplifier (T) and the scone relay in that of an additional transistor (T1) whose base is coupled to the directional amplifier. The advantage lies in the receiver not responding to interference pulses and thereby causing unwanted switching.