FIELD: electricity.
SUBSTANCE: introduction of hysteresis into discriminator curve of proportional channels excludes the situation when permit and inhibit to transfer data from proportional outputs of the discriminator is given at the same difference of phases. The phase discriminator comprises input of reference oscillation In2 and input of analysed oscillation In1; the proportional outputs are Out1 and Out2, while sign outputs are Out3 and Out4. Diagram of the discriminator includes the following: AND-NO gates 1-5, 13-16, RS-triggers 6, 7, 17, delay elements 8, 9, inverter 10, differentiating circuit 11 and pulse generators 12, 18, 19.
EFFECT: improved accuracy of phase difference at simultaneous use of sign and proportional outputs.
4 dwg
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