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US3585407A Expired / Lapsed US ⏱️ 0.0 years remaining

A complementary transistor switch using a zener diode

Assignee: Beckman Coulter Inc
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Filing: 1967-12-04
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Granted: 1971-06-15
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Expires: 1987-12-04
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Abstract

Abstract A high-speed electronic-switching circuit including two functionally interdependent stages, each stage comprising a pair of complementary transistors. The transistor of the output stage have their collector electrodes connected directly to each other and to an output terminal and their emitter electrodes connected to separate sources of potential. The transistors of the input stage have their base electrodes connected to a voltage dividing network including a Zener diode, and through that network to an input signal that alternately drives each transistor of the output pair of transistors into saturation in accordance with the level of the input signal to thereby alternately couple each potential source to the output terminal to produce a resultant output signal having predetermined upper and lower voltage levels.

Inventors

  • 👤 Neal W Vinson

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-25 17:46
CPC Classifications
H; H03; H03K; H03K17/00; H03K17/51; H03K17/56; H03K17/60; H03K17/66; H03K17/665; H03K17/666; H03K17/667

Claims Analysis

Total Claims: 1
Claim 1
Independent Claim 75 words
A high-speed switching circuit as defined in claim 1 comprising in addition a first diode connected between the collector electrode of said first transistor and the base electrode of said third transistor, and a second diode connected between the collector electrode of said second transistor and the base electrode of said fourth transistor, both said electrodes being suitably poled to prevent an excessive back bias potential from being applied across said third and fourth transistors.

References Cited (Backward Citations)

US3341713A Cited
US3323071A Cited
US3375455A Cited
US3423683A Cited
US3444393A Cited
US3493789A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1974-06-14 1974-12-14 1975-06-15 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1978-06-14 1978-12-14 1979-06-15 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1982-06-14 1982-12-14 1983-06-15 $7700.00 Window Closed / Lapsed

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