Voltage-limiting circuit with hysteresis comparator

Details Voltage-limiting circuit with hysteresis comparator Voltage-limiting circuit with hysteresis comparator

1997-03-12

1998-08-18

Callahan, Timothy P.

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Amplitude control

327309, 327427, 327530, 327535, 327205, 327536, H03K 1756

Patent

active

057962855

ABSTRACT:
In a voltage-limiting circuit, the voltage to be limited is applied to the terminals of a resistive line, and the current flowing in this line is amplified by a current mirror that thus produces a reference current. A current-controlled voltage source receives this reference current and produces a reference voltage. This reference voltage is given to a hysteresis comparator that switches over for two distinct values of the voltage to be regulated. The disclosed device is particularly useful in the field of the load pumps used in electrically programmable memories.

REFERENCES:
patent: 3962591 (1976-06-01), Popka
patent: 4471290 (1984-09-01), Yamaguchi et al.
patent: 4687954 (1987-08-01), Yasuda et al.
patent: 4980576 (1990-12-01), Rossi et al.
patent: 5276646 (1994-01-01), Kim et al.
patent: 5426334 (1995-06-01), Skovmand

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