Patent US3234400A successfully refreshed from Google Patents.
US3234400A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sense amplifier with tunnel diode for converting bipolar input to two level voltage logic output
Assignee: Unisys Corp
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Filing: 1962-01-31
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Granted: 1966-02-08
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Expires: 1982-01-31
Abstract
No abstract record available.
Inventors
- 👤 Hart Joseph Wayne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:26
CPC Classifications
H; H03; H03K; H03K3/00; H03K3/02; H03K3/313; H03K3/315; H03M; H03M1/00; H03M1/12; H03M1/34
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
181 words
A BIPOLAR-TO-BINARY SIGNAL VOLTAGE CONVERTER COMPRISING A TUNNEL DIODE HAVING AN ANODE AND A CATHODE TERMINAL, INPUT MEANS TO RECEIVE A BIPOLAR SIGNAL VOLTAGE CONNECTED TO SAID ANODE TERMINAL, TUNNEL DIODE BIASING MEANS ALSO CONNECTED TO THE ANODE TERMINAL OF THE TUNNEL DIODE FOR BISTABLE OPERATION THEREOF IN RESPONSE TO A BIPOLAR SIGNAL INPUT VOLTAGE TO SAID INPUT MEANS, A PNP TRANSISTOR HAVING AN INPUT, AN OUTPUT AND A COMMON ELECTRODE, SAID INPUT ELECTRODE CONNECTED TO THE ANODE TERMINAL OF THE TUNNEL DIODE, SAID TUNNEL DIODE BEING FURTHER CONNECTED IN A POLED DIRECTION BETWEEN A POLARIZED POWER SOURCE AND SAID TRANSISTOR INPUT ELECTRODE TO PROVIDE THE TRANSISTOR WITH A CURRENT BIAS, SAID CATHODE TERMINAL OF THE TUNNEL DIODE CONNECTED TO A POSITIVE TERMINAL OF A FIXED VOLTAGE SOURCE AND SAID COMMON ELECTRODE OF THE TRANSISTOR CONNECTED TO A FIXED VOLTAGE SOURCE WHICH IS MORE POSITIVE THAN THAT CONNECTED TO THE TUNNEL DIODE CATHODE TERMINAL BY AN AMOUNT SUBSTANTIALLY EQUAL TO THE HIGH VOLTAGE STABLE OPERATING STATE OF SAID TUNNEL DIODE, AND OUTPUT MEANS CONNECTED TO THE OUTPUT ELECTRODE OF SAID TRANSISTOR.
Claim 2
Dependent Claim
181 words
A BIPOLAR-TO-BINARY SIGNAL VOLTAGE CONVERTER COMPRISING A TUNNEL DIODE HAVING AN ANODE AND A CATHODE TERMINAL, INPUT MEANS TO RECEIVE A BIPOLAR SIGNAL VOLTAGE CONNECTED TO SAID ANODE TERMINAL, TUNNEL DIODE BIASING MEANS ALSO CONNECTED TO THE ANODE TERMINAL OF THE TUNNEL DIODE FOR BISTABLE OPERATION THEREOF IN RESPONSE TO A BIPOLAR SIGNAL INPUT VOLTAGE TO SAID INPUT MEANS, A PNP TRANSISTOR HAVING AN INPUT, AN OUTPUT AND A COMMON ELECTRODE, SAID INPUT ELECTRODE CONNECTED TO THE ANODE TERMINAL OF THE TUNNEL DIODE, SAID TUNNEL DIODE BEING FURTHER CONNECTED IN A POLED DIRECTION BETWEEN A POLARIZED POWER SOURCE AND SAID TRANSISTOR INPUT ELECTRODE TO PROVIDE THE TRANSISTOR WITH A CURRENT BIAS, SAID CATHODE TERMINAL OF THE TUNNEL DIODE CONNECTED TO A POSITIVE TERMINAL OF A FIXED VOLTAGE SOURCE AND SAID COMMON ELECTRODE OF THE TRANSISTOR CONNECTED TO A FIXED VOLTAGE SOURCE WHICH IS MORE POSITIVE THAN THAT CONNECTED TO THE TUNNEL DIODE CATHODE TERMINAL BY AN AMOUNT SUBSTANTIALLY EQUAL TO THE HIGH VOLTAGE STABLE OPERATING STATE OF SAID TUNNEL DIODE, AND OUTPUT MEANS CONNECTED TO THE OUTPUT ELECTRODE OF SAID TRANSISTOR.
References Cited (Backward Citations)
US3170073A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-02-07 | 1969-08-09 | 1970-02-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-07 | 1973-08-09 | 1974-02-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-07 | 1977-08-09 | 1978-02-08 | $7700.00 | Window Closed / Lapsed |