Communications: electrical – Systems – Selsyn type
Patent
1981-12-11
1984-06-05
Groody, James J.
Communications: electrical
Systems
Selsyn type
3408257, 34082564, 340310A, 375 94, 375 95, H04B 354, G08C 1900
Patent
active
044531567
ABSTRACT:
Method for detecting the presence or absence of an audio-frequency signal (V.sub.T) superimposed on a power supply network, the audio-frequency signal (V.sub.T) having a known frequency (f.sub.T) and an amplitude (A.sub.T) lying within a permissible range of amplitudes (.DELTA.A.sub.T), where the power supply network transmits a signal mixture (V) containing a fundamental (V.sub.g, f.sub.g, A.sub.g), harmonic frequencies (V.sub.H, f.sub.H, A.sub.H) thereof and interference frequencies (V.sub.S, f.sub.S, A.sub.S), which includes, with a microcomputer (M.sub.C), generating a signal at the same point on adjacent waves of the fundamental (V.sub.g);
REFERENCES:
patent: 4091361 (1978-05-01), Eichelberger et al.
patent: 4106007 (1978-08-01), Johnston et al.
patent: 4370563 (1983-01-01), Vandling
patent: 4379284 (1983-04-01), Boykin
patent: 4399547 (1983-08-01), Moore et al.
Brown Richard W.
Winkler Gary
Brown, Boveri & Co. AG
Greenberg Laurence A.
Groody James J.
Lerner Herbert L.
LandOfFree
Load control receiver and method of operation does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Load control receiver and method of operation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Load control receiver and method of operation will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1500605