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US4506170A Expired / Lapsed US ⏱️ 0.0 years remaining

Differential current distributing circuit

Assignee: Toshiba Corp
•
Filing: 1983-02-08
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Granted: 1985-03-19
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Expires: 2003-02-08
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Abstract

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.

Inventors

  • 👤 Yasuo Mizuide

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-05 07:03
CPC Classifications
H; H02; H02P; H02P6/00; H02P6/08; H02P6/28

Claims Analysis

Total Claims: 2
Claim 1
Independent Claim 206 words
A differential current distributing circuit comprising: a constant current source; a first current path including a first resistor, collector-emitter path of a first transistor of first conductivity type and emitter-collector path of a second transistor of second conductivity type which are connected in series between an output terminal of the constant current source and a first current output terminal; and a second current path including a second resistor, a 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 said constant current source and a second current output terminal, in which the base electrode of said first transistor is connected to the output terminal of said second resistor, the base electrode of said third transistor is connected to the output terminal of said first resistor, a first input signal is supplied to the base electrode of said second transistor, a second input signal is supplied to the base electrode of said fourth transistor, and an output current of said constant current source is distributed into either of said first and second current paths according to a level difference between said first and second input signals.
Claim 2
Dependent Claim 206 words
A differential current distributing circuit comprising: a constant current source; a first current path including a first resistor, collector-emitter path of a first transistor of first conductivity type and emitter-collector path of a second transistor of second conductivity type which are connected in series between an output terminal of the constant current source and a first current output terminal; and a second current path including a second resistor, a 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 said constant current source and a second current output terminal, in which the base electrode of said first transistor is connected to the output terminal of said second resistor, the base electrode of said third transistor is connected to the output terminal of said first resistor, a first input signal is supplied to the base electrode of said second transistor, a second input signal is supplied to the base electrode of said fourth transistor, and an output current of said constant current source is distributed into either of said first and second current paths according to a level difference between said first and second input signals.

References Cited (Backward Citations)

US3938014A Cited
US3848139A Cited
US4276485A Cited
DE2905629A1 Cited
GB2077542A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1988-03-18 1988-09-17 1989-03-19 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1992-03-18 1992-09-17 1993-03-19 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1996-03-18 1996-09-17 1997-03-19 $7700.00 Window Closed / Lapsed

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