Power-on-reset circuit with power fail detection

Details Power-on-reset circuit with power fail detection Power-on-reset circuit with power fail detection

1979-06-12

1981-04-07

Miller, Jr., Stanley D.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307268, 307297, 307358, 328 48, H03K 501, H03K 2132

Patent

active

042609070

ABSTRACT:
A power-on-reset circuit with power fail detection, comprises a supply voltage V, and a voltage divider comprising two series resistors connected between V and the ground. The junction between the two resistors is connected to the (+) terminal of a voltage comparator. The junction is also connected through a diode to the (-) terminal of the comparator. The (-) terminal is also connected to ground through a capacitor and resistor in parallel. A resistor and compacitor in series are connected between V and ground and the junction between the resistor and the capacitor is connected to the output of the comparator, and also to the input of an inverting gate. The output of the inverting gate is the power-on-reset terminal.

REFERENCES:
patent: 3808466 (1974-04-01), Campbell
patent: 3895239 (1975-07-01), Alaspa
patent: 3950654 (1976-04-01), Broedner et al.

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