Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – Frequency of cyclic current or voltage
Patent
1997-10-21
1999-12-21
Do, Diep N.
Electricity: measuring and testing
Measuring, testing, or sensing electricity, per se
Frequency of cyclic current or voltage
324 7648, 324 7662, 327 39, 327 48, G01R 2302, H03K 906
Patent
active
06005381&
ABSTRACT:
A circuit for detecting a predefined reoccurring phase point an periodic electrical signal has an input stage which rectifies the signal into first and second complementary signals. A Schmitt circuit has an input connected to the rectifier stage and produces a first intermediate signal in response to the voltage of the first complementary signal. A complementary Schmitt circuit is connected to the rectifier stage and produces a second intermediate signal in response to the voltage of the second complementary signal. An output stage that is connected to the Schmitt circuit and the complementary Schmitt circuit, responds to the first and second intermediate signals by producing an indication of each occurrence of the reoccurring phase point in the periodic electrical signal.
REFERENCES:
patent: 3416080 (1968-12-01), Wright et al.
patent: 3491294 (1970-01-01), Little et al.
patent: 3524131 (1970-08-01), McWaid
patent: 3727079 (1973-04-01), Garrett
patent: 3745475 (1973-07-01), Turner
patent: 3859512 (1975-01-01), Ritzinger
patent: 3906361 (1975-09-01), Nessler et al.
patent: 4070618 (1978-01-01), Thomas
patent: 4345169 (1982-08-01), Saleh
patent: 4352999 (1982-10-01), Galpin
patent: 4480220 (1984-10-01), Tan et al.
patent: 5896049 (1999-04-01), Aunders et al.
Nelson Jeffrey C.
Saunders John M.
Do Diep N.
Kohler Co.
LandOfFree
Electrical signal phase detector does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Electrical signal phase detector, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Electrical signal phase detector will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-508471