Electricity: motive power systems – Braking – Automatic and/or with time-delay means
Patent
1984-08-08
1986-02-25
Shoop, Jr., William M.
Electricity: motive power systems
Braking
Automatic and/or with time-delay means
318341, 318599, 318606, H02P 516
Patent
active
045729956
ABSTRACT:
A synchronism discriminating circuit comprises a phase comparator supplied with a reference signal having a reference frequency and a reference phase and with an input signal of which a synchronism with respect to the reference signal is to be discriminated, for comparing the phase of the reference signal with the phase of the input signal and for producing an output signal responsive to a phase difference between the two signals, where the reference signal is made up of a series of pulses, and a discriminating circuit supplied with the reference signal and with the output signal of the phase comparator, for counting the pulses in the reference signal during a period in which the phase difference is within a predetermined range and for producing a synchronism discrimation signal when a predetermined number or more pulses in the reference signal are continuously counted.
REFERENCES:
patent: 3110853 (1963-11-01), Jones
patent: 3753067 (1973-08-01), Milligan
patent: 3934269 (1976-01-01), Fujita et al.
patent: 3956710 (1976-05-01), Seitz et al.
patent: 4211967 (1980-07-01), Akiyama et al.
patent: 4243921 (1981-01-01), Tamura et al.
patent: 4272712 (1981-06-01), Beling et al.
patent: 4355266 (1982-10-01), Pearson
patent: 4376914 (1983-03-01), Kimura
patent: 4386300 (1983-05-01), Ogawa
US Journal: IEEE, Transactions on Instrumentation and Measurement, vol. IM-26 No. 2, Jun. 1977, pp. 153-157.
Ip Shik Luen Paul
Shoop Jr. William M.
Victor Company of Japan Ltd.
LandOfFree
Synchronism discriminating circuit does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Synchronism discriminating circuit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Synchronism discriminating circuit will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1013919