Electrical transmission or interconnection systems – Nonlinear reactor systems – Parametrons
Patent
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.
Ingram Charles B.
Lawhorn John H.
Anagnos Larry N.
Breeden David E.
Carlson Dean E.
Hamel Stephen D.
The United States of America as represented by the United States
LandOfFree
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.
Profile ID: LFUS-PAI-O-724873