Zero crossing detector arrangements

Details Zero crossing detector arrangements Zero crossing detector arrangements

1990-05-24

1991-09-24

Miller, Stanley D.

Electrical transmission or interconnection systems

Personnel safety or limit control features

Interlock

307236, 328114, 328150, H03K 5153

Patent

active

050516167

ABSTRACT:
A zero crossing detector arrangement which is operable on successive samples of an analogue signal comprises a first stage (3) which includes adders and dividers (A,D) for affording a first output (b4) corresponding to the average of two successive samples (x1,x2), a gate (G2) for affording a first estimate (B3) in dependence upon the relative signs of one of the successive samples (x1) and the first output and a second stage 4 which includes adders and dividers (A,D) for affording a second output (b6) corresponding to the average of the first output (b4) and a selected one of the successive samples (x1,x2) and a gate (G2) for affording a second estimate (B2) in dependence upon the relative signs of the second output (b6) and a selected one of either the one of the successive samples (x1,x2) or said first output (b4), the first estimate (B3) and the second estimate (B2) constituting an output word which is indicative of the position of a zero crossing.

REFERENCES:
patent: 4412339 (1983-10-01), Alfke et al.
patent: 4587448 (1986-05-01), Batterman
patent: 4870659 (1989-09-01), Oishi et al.

Affiliated with

Also associated with

Rating

Zero crossing detector arrangements does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Zero crossing detector arrangements, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Zero crossing detector arrangements will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1698739