Oscillation stoppage detection circuit

Details Oscillation stoppage detection circuit Oscillation stoppage detection circuit

1992-01-30

1992-09-29

Pascal, Robert J.

Oscillators

With indicator, signal, or alarm

331158, H03B 100

Patent

active

051516667

ABSTRACT:
An oscillation stoppage detecting circuit has a boost circuit to which is inputted an output of an oscillation circuit and a level detection circuit to which is inputted an output of the boost circuit. The boost circuit used here is, for example, a voltage doubler circuit which utilizes two diodes, a capacitor and an inverter, which is so-called a charge pump circuit. The boost circuit is operated by the oscillation output of the oscillation circuit and the oscillation stoppage is detected as a result of the comparison between the output voltage of the boost circuit and a threshold voltage of the level detection circuit. The arrangement enables to realize a circuit of low power consumption.

REFERENCES:
patent: 3370251 (1968-02-01), Overstreet, Jr.
patent: 3736523 (1973-05-01), Puskas
patent: 4257010 (1981-03-01), Bergman et al.

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