Voltage measuring circuit

Details Voltage measuring circuit Voltage measuring circuit

1991-06-12

1993-01-19

Sikes, William L.

Electrical transmission or interconnection systems

Personnel safety or limit control features

Interlock

307355, 307362, 307491, 307494, 307530, G06G 710, H03K 5153

Patent

active

051809290

ABSTRACT:
A voltage measuring circuit for detecting an unknown voltage in a semiconductor integrated circuit or the like. A voltage to be measured is converted into a first current by a current converting transistor, and a difference between the first current and a reference current is converted into a voltage. As a result, the voltage measuring circuit can be arranged without using a floating node, whereby it is possible to prevent variations in a desired voltage value to be measured.

REFERENCES:
patent: 4587442 (1986-05-01), Gray et al.
patent: 4752699 (1988-06-01), Cranford, Jr. et al.
patent: 4952821 (1990-08-01), Kokubun
patent: 5075572 (1991-12-01), Poteet et al.

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