FIELD: demodulating voltage modulated by changing amplitude between low and high levels.
SUBSTANCE: charge voltage V1, V2 is generated in first and second charge circuits, respectively. First charge circuit is set up of capacitor C1 and current supply i1 which, in their turn, are parallel-connected at output of V1 voltage unit. Accordingly second charge circuit is set up of capacitor C2 and current supply i2. Second charge circuit is connected to unit Y through charge switch S1. The latter is energized by low-frequency voltage UNF used for modulating high-frequency ac input voltage UHF of rectifier circuit D1, D2.
EFFECT: enhance reliability of changing levels between two states in amplitude shift keyed modulation.
7 cl, 8 dwg
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