Phase detection system

Details Phase detection system Phase detection system

1979-05-14

1981-12-08

Heyman, John S.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307516, 307528, H03K 526

Patent

active

043050409

ABSTRACT:
A phase detection system in which a triangular reference signal which is substantially similar in waveform, frequency and amplitude to an input signal is used and at a time of detection whether the reference and input signal are rising or falling is detected and also whether or not the input signal is greater than an auxiliary or complementary signal derived by subtracting the reference signal from a constant DC signal whose amplitude is equal to a maximum amplitude of the reference signal is detected. Operations are executed based upon the detection results so that an output signal representative of an instantaneous phase difference between the input and reference signals is obtained without any delay in time. The relationships between operands and results in operations are as follows:

REFERENCES:
patent: 3430148 (1969-02-01), Miki
patent: 3588734 (1971-06-01), Welti
patent: 3600690 (1971-08-01), White
patent: 3610954 (1971-10-01), Treadway

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