Electrical transmission or interconnection systems – Personnel safety or limit control features – Interlock
Patent
1983-02-08
1985-03-19
Zazworsky, John
Electrical transmission or interconnection systems
Personnel safety or limit control features
Interlock
307244, 307263, 307291, H03K 1704, H03K 524, H03K 326
Patent
active
045061700
ABSTRACT:
A differential current distributing circuit includes a first current path including a first resistor, collector-emitter path of a first transistor of first conductivity type and emitter-collector path of second conductivity type which are connected in series between the output terminal of a constant current source and a first current output terminal and a second current path including a second resistor, collector-emitter path of a third transistor of first conductivity type and emitter-collector path of a fourth transistor of second conductivity type which are connected in series between the output terminal of the constant current source and a second current output terminal. The base electrode of the first transistor is connected to the output terminal of the second resistor and the base electrode of the third transistor is connected to the output terminal of the first resistor. A first input signal is supplied to the base electrode of the second transistor and a second input signal is supplied to the base electrode of the fourth transistor.
REFERENCES:
patent: 3848139 (1974-11-01), Holt, Jr.
patent: 3938014 (1976-02-01), Nakajima
patent: 4276485 (1981-06-01), Rydval
Tokyo Shibaura Denki Kabushiki Kaisha
Zazworsky John
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