Signal level transforming circuit

Details Signal level transforming circuit Signal level transforming circuit

1988-09-26

1990-04-10

Miller, Stanley D.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307475, 307290, 307359, 307350, H03K 5153, H03K 329, H03L 500

Patent

active

049163302

ABSTRACT:
A signal level transforming circuit includes a constant current circuit for supplying a constant current corresponding to a power voltage of an input signal to an electrical line connected between an output terminal connected with an input terminal via an input resistor and a common voltage level terminal, a low level clamping circuit for clamping the minimum value of the voltage at the output terminal to a first low level voltage, a voltage generating circuit for generating a constant voltage so as to transform a voltage signal in the input terminal into a binary signal, and a comparing circuit having a hysteresis characteristic and including a multi-collector type transistor having one collector connected with a voltage output terminal in the voltage generating circuit via a resistor for setting a comparing voltage, and having another collector connected to the output terminal, and a transistor inserted between a base of the multi-collector type transistor and the resistor for setting a comparing voltage and for turning ON when the voltage at the input terminal exceeds the voltage in the resistor.

REFERENCES:
patent: 4525638 (1985-06-01), Gray
patent: 4684877 (1987-08-01), Shreve et al.

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