Apparatus for determining when a preselected phase relationship

Details Apparatus for determining when a preselected phase relationship Apparatus for determining when a preselected phase relationship

1991-03-21

1992-04-07

Wieder, Kenneth A.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Phase comparison

324 86, 324 83R, 328134, G01R 2500

Patent

active

051031620

ABSTRACT:
Apparatus for determining when two periodic signals are within preselected limits of being in phase, includes square wave generators which convert the periodic signals to pulse trains, and an AND gate which combines the pulse trains to generate a rectangular wave signal having a logic one value when the two pulse trains overlap. A monostable one-shot multivibrator generates clock pulses in response to the leading edge of the rectangular wave signal. A flip-flop latches its output to the logic level of the rectangular wave signal on the trailing edge of the clock pulses. The clock pulses are of a duration representative of the selected phase angle limit, so that the output of the flip-flop is a phase angle acceptance window having a logic 1 value when the difference in phase between the periodic signals is within the selected limits.

REFERENCES:
patent: 3515997 (1970-06-01), Babany
patent: 3564286 (1971-02-01), Rubner et al.
patent: 3621278 (1971-11-01), Rubner et al.
patent: 3652933 (1972-03-01), Rubner et al.
patent: 4119910 (1978-10-01), Hayashi
patent: 4471299 (1984-09-01), Elmis
patent: 4527080 (1985-07-01), Zweig
patent: 4559492 (1985-12-01), Baba
patent: 4600994 (1986-07-01), Hayashi
patent: 4884020 (1989-11-01), Blakeslee
patent: 4926115 (1990-05-01), Tarleton

Affiliated with

Also associated with

Rating

Apparatus for determining when a preselected phase relationship does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Apparatus for determining when a preselected phase relationship , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus for determining when a preselected phase relationship will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1897848