OSCILLATOR WITH AUTOMATIC FREQUENCY CONTROL Russian patent published in 1996 - IPC

FIELD: radio engineering local oscillators of radio receivers for amplitude and frequency modulated signals. SUBSTANCE: oscillator with automatic frequency control (AFC) has high- frequency self-excited oscillator, frequency divider, phase detector, reference oscillator, low-frequency filter, DC voltage storage unit built up of series-connected analog-to- digital converter, first concurrent-writing register, and digital-to-analog converter, second concurrent-writing register, power supply, switch, synchronize, and logical adder. EFFECT: reduced power requirement when using interrupted power supply to digital automatic frequency control circuit. 2 cl, 2 dwg