Integrated ultra low leakage high voltage protection circuit

Details Integrated ultra low leakage high voltage protection circuit Integrated ultra low leakage high voltage protection circuit

1992-05-05

1994-10-18

Hoff, Marc S.

Electricity: electrical systems and devices

Safety and protection of systems and devices

Load shunting by fault responsive means

361 91, 361118, H02H 320

Patent

active

053573935

ABSTRACT:
An integrated high voltage device with an ultra low leakage input protection circuit to be used in highly sensitive circuits which require ultra low input leakage current. The protection circuit has a common substrate with the integrated circuit device and the common substrate is floating. The floating substrate provides a way of designing a protection circuit with small diodes which have ultra low input D.C. leakage. The protection circuit includes a resistor and two small Zener diodes which can clamp and protect the device during normal operating conditions up to voltages such as 1700 volts.

REFERENCES:
patent: 3947727 (1976-03-01), Stewart
patent: 4027240 (1977-05-01), Meade
patent: 4061983 (1977-12-01), Suzuki
patent: 4607274 (1986-08-01), Yoshitake
patent: 4804922 (1989-02-01), Sometani et al.
patent: 4990976 (1991-02-01), Hattori

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