AUTOMATIC FREQUENCY DEVIATION CONTROL DEVICE

AUTOMATIC FREQUENCY DEVIATION CONTROL DEVICE

FIELD: radio engineering. SUBSTANCE: device has quartz-crystal pulse generator, frequency divider, controlled standard oscillator, frequency signal adder, frequency-to-voltage converter, frequency subtraction digital unit, pulse shaper, low-frequency filter, ac amplifier, analog subtracter, controll...

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Hauptverfasser: ALEKSEENKOV A.E, PIMENOV V.A, NEKRASOV I.S
Format: Patent
Sprache:eng
Schlagworte:
BASIC ELECTRONIC CIRCUITRY
ELECTRICITY
MODULATION
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creator ALEKSEENKOV A.E
PIMENOV V.A
NEKRASOV I.S
description FIELD: radio engineering. SUBSTANCE: device has quartz-crystal pulse generator, frequency divider, controlled standard oscillator, frequency signal adder, frequency-to-voltage converter, frequency subtraction digital unit, pulse shaper, low-frequency filter, ac amplifier, analog subtracter, controlled entity (local oscillator), and reference voltage supply. Adder circuit incorporates single-shot multivibrator, majority element, and D flip-flop. Stabilization of frequency deviation is effected due to correction using results of digital comparison of controlled entity and controlled oscillator frequencies. In order to eliminate effect of superposition of frequency signals, adder incorporates provision for uniform synchronization of D flip-flop at double frequency. EFFECT: improved stability of frequency deviation in frequency modulators. 2 cl, 3 dwg
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subjects BASIC ELECTRONIC CIRCUITRY
ELECTRICITY
MODULATION
title AUTOMATIC FREQUENCY DEVIATION CONTROL DEVICE
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