Voltage limiter and single-ended to differential converter using

Details Voltage limiter and single-ended to differential converter using Voltage limiter and single-ended to differential converter using

1992-10-13

1994-02-01

Wambach, Margaret R.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307520, 307494, 307228, 307261, 361 90, 328167, G06G 712, H03K 408

Patent

active

052834840

ABSTRACT:
A voltage limiter (20) includes a resistor (21) receiving an input signal on a first terminal and providing an output signal on a second terminal, and a capacitor (22) connected between the second terminal of the resistor (21) and ground. Two transistors (23,26) biased by first and second bias voltages, respectively, are connected between the second terminal of the resistor and a second voltage terminal to clamp the output voltage between high and low voltage limits. A single-ended to differential converter (60) uses two such voltage limiters. A first voltage limiter (90) receives an input voltage, and has an output terminal connected to a positive input terminal of an amplifier (100). A second voltage limiter (92) has an input terminal connected to the second voltage terminal and an output terminal connected to a negative input terminal of the amplifier (100). A shared capacitor (83) is coupled between second terminals of resistors of the first (90) and second (92) voltage limiters.

REFERENCES:
patent: 4697152 (1987-09-01), Westwick
patent: 4849708 (1989-07-01), Brehmer et al.
patent: 4996504 (1991-02-01), Huber et al.
patent: 5155396 (1992-10-01), Maluberti et al.

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