US3171981A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Clock pulse generation and distribution circuit
Assignee: International Business Machines Corp
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Filing: 1962-07-02
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Granted: 1965-03-02
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Expires: 1982-07-02
Abstract
No abstract record available.
Inventors
- 👤 Arden J Wolterman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:51
CPC Classifications
H; H03; H03K; H03K19/00; H03K19/02; H03K19/08; H03K19/10
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
326 words
A VOLTAGE PULSE GENERATION AND DISTRIBUTION CIRCUIT COMPRISING, IN COMBINATION: AN INPUT TRANSFORMER HAVING A PRIMARY WINDING AND A SECONDARY WINDING WITH RESPECTIVE TERMINALS THEREFOR, SAID SECONDARY WINDING HAVING A CENTER-TAP TERMINAL; FIRST AND SECOND TUNNEL-DIODES, SAID FIRST TUNNEL-DIODE; HAVING ITS CATHODE CONNECTED TO ONE TERMINAL OF SAID SECONDARY WINDING, SAID SECOND TUNNEL-DIODE HAVING ITS ANODE CONNECTED TO THE OTHER SAID TERMINAL OF SAID SECONDARY WINDING; FIRST AND SECOND CAPACITANCES SERIALLY CONNECTED, HAVING RESPECTIVE TERMINALS AND A COMMON JUNCTION, SAID FIRST CAPACITANCE TERMINAL BEING CONNECTED TO THE ANODE OF SAID FIRST TUNNEL-DIODE AND SAID SECOND CAPACITANCE TERMINAL BEING CONNECTED TO THE CATHODE OF SAID SECOND TUNNEL-DIODE, SAID COMMON JUNCTION OF SAID CAPACITANCES BEING CONNECTED TO SAID CENTER-TAP TERMINAL OF SAID SECONDARY WINDING AND BEING FURTHER CONNECTED TO GROUND POTENTIAL; THIRD AND FOURTH TUNNEL-DIODES CONNECTED IN A TUNNELDIODE TWIN CIRCUIT HAVING RESPECTIVE TERMINALS AND A COMMON JUNCTION, SAID THIRD AND FOURTH TUNNEL-DIODES HAVING RELATIVELY HIGH PEAK CURRENT AND LOW RESISTANCE CHARACTERISTICS IN THE REVERSE CURRENT AND VOLTAGE DIRECTIONS WITH RESPECT TO THESE PARAMETERS FOR SAID FIRST AND SECOND TUNNEL-DIODES; A RESISTANCE, SAID TUNNEL-DIODE TWIN-CIRCUIT AND SAID RESISTANCE BEING CONNECTED IN A PARALLEL CIRCUIT IN A CLOSELY ELECTRICALLY PROXIMATE CIRCUIT, SAID ONE TERMINAL OF SAID TUNNEL-DIODE TWIN-CURRENT BEING CONNECTED TO SAID ANODE OF SAID FIRST TUNNEL-DIODE AND SAID SECOND TERMINAL OF SAID TUNNEL-DIODE TWIN-CIRCUIT BEING CONNECTED TO SAID CATHODE OF SAID SECOND TUNNELDIODE; RESISTIVE LOAD MEANS CONNECTED BETWEEN SAID TUNNELDIODE TWIN-CIRCUIT COMMON JUNCTION AND SAID GROUND POTENTIAL; AND MEANS TO APPLY TO SAID TERMINALS OF SAID TRANSFORMER PRIMARY WINDING A RAMP CURRENT HAVING PRE-ESTABLISHED RAMP SLOPE AND TERMINATION TIME; WHEREBY VOLTAGE PULSES ARE APPLIED TO SAID TUNNEL-DIODE TWINCIRCUIT, THEREBY TO CAUSE A CHANGE OF CURRENT IN SAID RESISTIVE LOAD MEANS, AND WHEREBY THE INTERACTION OF SAID FIRST AND SECOND TUNNEL-DIODES AND SAID FIRST AND SECOND CAPACITANCES AND SAID SECONDARY WINDING PRECLUDES THE BACK ELECTROMOTIVE-FORCE DEVELOPED IN SAID TRANSFORMER SECONDARY WINDING FROM REACHING SAID TERMINALS OF SAID TUNNEL-DIODE TWIN-CIRCUIT.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-03-01 | 1968-08-31 | 1969-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-01 | 1972-08-31 | 1973-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-01 | 1976-08-31 | 1977-03-02 | $7700.00 | Window Closed / Lapsed |