Power normalized demodulator

Abstract

Abstract A POWER NORMALIZED DEMODULATOR CIRCUIT THAT COMPENSATES FOR SCALE FACTOR CHANGES IN THE ACCURATE CONVERSION OF AC INPUT SIGNALS TO DC OUTPUT SIGNALS, IS DISCLOSED. AC REFERENCE SIGNALS ARE APPLIED TO A SCALE COMPENSATION CIRCUIT THAT OPERATES TO PROVIDE PULSED CONTROL SIGNALS THE PULSE WIDTH OF WHICH IS VARIED IN ACCORDANCE WITH AMPLITUDE CHANGES OF THE AC REFERENCE SIGNAL WHICH ARE ATTRIBUTABLE TO SCALE FACTOR CHANGES. THE PULSED CONTROL SIGNAL SERVES TO CONTROL THE TIME PERIOD DURING WHICH A SWITCHING DEVICE IS ENABLED. CONTROLLING SUCH TIME PERIOD PERMITS CONTROL OF THE LEVEL OF VOLTAGE APPLIED AN AN INPUT TO AN AC TO DC CONVERTER CIRCUIT. THE PULSED CONTROL SIGNAL ALSO SERVES TO CONTROL OPERATION OF THE AC TO DC CONVERTER CIRCUIT WHICH INCLUDES ANOTHER SWITCHING DEVICE THAT IS CYCLICALLY RENDERED CONDUCTIVE BY THE PULSED CONTROL SIGNAL TO PERMIT THE DISCHARGE OF AN INPUT CAPACITOR THROUGH THE CONVERTER SWITCHING DEVICE TO CHARGE AN OUTPUT CAPACITOR. THE VOLTAGE TO WHICH THE OUTPUT CAPACITOR IS CHARGED ESSENTIALLY CONSTITUTES THE DESIRED DC OUTPUT SIGNAL. HOWEVER, A BUFFER AMPLIFIER STAGE IS EMPLOYED TO PROVIDE A HIGH IMPEDANCE FOR THE CONVERTER AND THE PROVIDE A NOMINAL GAIN. D R A W I N G

Inventors

• 👤 A Moses

Bibliographic Details