Missing pulse detector for a variable frequency source

Details Missing pulse detector for a variable frequency source Missing pulse detector for a variable frequency source

1977-11-07

1979-02-27

Anagnos, Larry N.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307261, 307273, 328129, H03K 518, H03K 5156, H03K 3284

Patent

active

041421590

ABSTRACT:
A missing pulse detector is provided which has the capability of monitoring a varying frequency pulse source to detect the loss of a single pulse or total loss of signal from the source. A frequency-to-current converter is used to program the output pulse width of a variable period retriggerable one-shot to maintain a pulse width slightly longer than one-half the present monitored pulse period. The retriggerable one-shot is triggered at twice the input pulse rate by employing a frequency doubler circuit connected between the one-shot input and the variable frequency source being monitored. The one-shot remains in the triggered or unstable state under normal conditions even though the source period is varying. A loss of an input pulse or single period of a fluctuating signal input will cause the one-shot to revert to its stable state, changing the output signal level to indicate a missing pulse or signal.

REFERENCES:
patent: 3204189 (1965-08-01), Trautwein
patent: 3518456 (1970-06-01), Mauduit et al.
patent: 3536935 (1970-10-01), Watson, Jr. et al.
patent: 3569744 (1971-03-01), Garrahan
patent: 3652943 (1972-03-01), Piccirilli et al.
Jenny, "Missing Pulse Detector"; IBM Tech. Discl. Bull.; vol. 2, No. 4, pp. 66-67; Dec. 1959.
Carlson et al., "System for Eliminating Home Emitter Wheel"; IBM Tech. Discl. Bull.; vol. 15, No. 11, pp. 3368-3369; Apr. 1973.

Affiliated with

Also associated with

Rating

Missing pulse detector for a variable frequency source does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Missing pulse detector for a variable frequency source, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Missing pulse detector for a variable frequency source will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-724873