Voltage level detection circuit

Details Voltage level detection circuit Voltage level detection circuit

1985-02-27

1987-07-21

Miller, Stanley D.

Electrical transmission or interconnection systems

Personnel safety or limit control features

Interlock

307354, 307581, 307279, 307290, H03K 1730

Patent

active

046820515

ABSTRACT:
A voltage level detection circuit connected between first and second feed lines, including a first depletion-type metal insulator semiconductor (MIS) transistor connected between the first feed line and a common node and having a gate connected to the first feed line, a second depletion-type MIS transistor connected between the common node and the second feed line and having a gate connected to the second feed line, and a circuit connected to the common node for generating an output signal when a potential at the common node reaches a predetermined value. The voltage level detection circuit can include a third depletion-type MIS transistor having a drain connected to the drain of the first depletion-type MIS transistor, a source connected to the source of the first depletion-type MIS transistor, and a gate connected to the output terminal of the output signal generation circuit, to output a stabilized output signal at the output terminal of the output signal generation circuit.

REFERENCES:
patent: 3950654 (1976-04-01), Broedner et al.
patent: 4173756 (1979-11-01), Kawagai et al.
patent: 4301380 (1981-11-01), Thomas
patent: 4321489 (1982-03-01), Higuchi et al.
patent: 4460985 (1984-07-01), Hoffman
patent: 4463270 (1984-07-01), Gordon

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