US3330973A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bi-polar transient detector
Assignee: International Business Machines Corp
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Filing: 1964-11-16
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Granted: 1967-07-11
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Expires: 1984-11-16
Abstract
No abstract record available.
Inventors
- 👤 Genung L Clapper
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 03:19
CPC Classifications
H; H03; H03K; H03K5/00; H03K5/153; H03K5/1534
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
218 words
A TRANSIENT DETECTOR CIRCUIT FOR PRODUCING AN OUTPUT PULSE IN RESPONSE TO INPUT TRANSISTORS FROM A TRANSIENT SIGNAL SOURCE COMPRISING (A) A TRANSISTOR AMPLIFIER, (B) A LOW IMPEDANCE CIRCUIT FROM THE EMITTER OF SAID AMPLIFIER TO A REFERENCE POTENTIAL, (C) A HIGHER IMPEDANCE CIRCUIT FROM THE BASE OF SAID AMPLIFIER TO THE REFERENCE POTENTIAL, (D) BIAS MEANS FOR SAID HIGH AND LOW IMPEDANCE CIRCUIT TO MAINTAIN THE BASE-EMITTER JUNCTION NONCONDUCTING IN THE ABSENCE OF AN INPUT SIGNAL, (E) AN INPUT CIRCUIT INCLUDING A CAPACITOR CONNECTED TO THE JUNCTION OF A FIRST AND SECOND DIODE, SAID FIRST DIODE BEING ORIENTED SUCH THAT A NEGATIVE EXCURSION OF TRANSIENT SIGNAL APPLIED TO SAID CAPACITOR WILL BE TRANSFERRED THROUGH SAID FIRST DIODE, SAID SECOND DIODE BEING ORIENTED SUCH THAT A POSITIVE EXCURSION OF TRANSIENT SIGNAL APPLIED TO SAID CAPACITOR WILL BE TRANSFERRED THROUGH SAID SECOND DIODE, (F) MEANS FOR CONNECTING SAID INPUT CIRCUIT ACROSS SAID BASE-EMITTER JUNCTION AND IN SAID HIGH IMPEDANCE PATH TO SAID BASE SO THAT THE NEGATIVE EXCURSION OF A TRANSIENT SIGNAL WILL BE APPLIED TO THE BASE AND THE POSITIVE EXCURSION OF A TRANSIENT SIGNAL WILL BE APPLIED TO SAID EMITTER. (G) WHEREBY A POSITIVE SIGNAL TO SAID EMITTER WILL BIAS THE AMPLIFIER TO CONDUCTION OR A NEGATIVE SIGNAL TO SAID BASE WILL BIAS SAID AMPLIFIER TO CONDUCTION.
Claim 2
Dependent Claim
218 words
A TRANSIENT DETECTOR CIRCUIT FOR PRODUCING AN OUTPUT PULSE IN RESPONSE TO INPUT TRANSISTORS FROM A TRANSIENT SIGNAL SOURCE COMPRISING (A) A TRANSISTOR AMPLIFIER, (B) A LOW IMPEDANCE CIRCUIT FROM THE EMITTER OF SAID AMPLIFIER TO A REFERENCE POTENTIAL, (C) A HIGHER IMPEDANCE CIRCUIT FROM THE BASE OF SAID AMPLIFIER TO THE REFERENCE POTENTIAL, (D) BIAS MEANS FOR SAID HIGH AND LOW IMPEDANCE CIRCUIT TO MAINTAIN THE BASE-EMITTER JUNCTION NONCONDUCTING IN THE ABSENCE OF AN INPUT SIGNAL, (E) AN INPUT CIRCUIT INCLUDING A CAPACITOR CONNECTED TO THE JUNCTION OF A FIRST AND SECOND DIODE, SAID FIRST DIODE BEING ORIENTED SUCH THAT A NEGATIVE EXCURSION OF TRANSIENT SIGNAL APPLIED TO SAID CAPACITOR WILL BE TRANSFERRED THROUGH SAID FIRST DIODE, SAID SECOND DIODE BEING ORIENTED SUCH THAT A POSITIVE EXCURSION OF TRANSIENT SIGNAL APPLIED TO SAID CAPACITOR WILL BE TRANSFERRED THROUGH SAID SECOND DIODE, (F) MEANS FOR CONNECTING SAID INPUT CIRCUIT ACROSS SAID BASE-EMITTER JUNCTION AND IN SAID HIGH IMPEDANCE PATH TO SAID BASE SO THAT THE NEGATIVE EXCURSION OF A TRANSIENT SIGNAL WILL BE APPLIED TO THE BASE AND THE POSITIVE EXCURSION OF A TRANSIENT SIGNAL WILL BE APPLIED TO SAID EMITTER. (G) WHEREBY A POSITIVE SIGNAL TO SAID EMITTER WILL BIAS THE AMPLIFIER TO CONDUCTION OR A NEGATIVE SIGNAL TO SAID BASE WILL BIAS SAID AMPLIFIER TO CONDUCTION.
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) | 1970-07-10 | 1971-01-09 | 1971-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-10 | 1975-01-09 | 1975-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-10 | 1979-01-09 | 1979-07-11 | $7700.00 | Window Closed / Lapsed |