Receiver of pulsed phase modulated signals

A receiver of pulsed phase modulated signals carried by an alternating power line comprising:

• an integrator for receiving a sinusoidal voltage reference in phase with the voltage on the power line and for producing a sinusoidal voltage, phase shifted 90 degrees;
• a first multiplier having as one input said phase shifted voltage and as a second input a direct current voltage representative of the deviation of signals processed from a desired average;
• said first multiplier producing said phase shifted voltage modified in amplitude;
• a summing amplifier having as an input both the output produced by said multiplier and the sinusoidal voltage reference;
• said summing amplifier producing a corrected sinusoidal voltage output;
• a current transformer producing a sinusoidal current in phase with the current on said power line;
• a second multiplier having as a first input said corrected sinusoidal voltage, and as a second input said sinusoidal current;
• said second multiplier producing a direct current pulse of a maximum amplitude when a reactance is switched onto said power line and a minimum amplitude when said reactance is switched off said power line;
• integrating means receiving and integrating the difference between said maximum and minimum direct current pulses and for producing the direct current voltage to be supplied to said first multiplier;
• and
• detecting means for receiving said maximum and minimum amplitude pulses and producing a pulse code modulated output.