Patent US3174055A successfully refreshed from Google Patents.
US3174055A
Expired / Lapsed
US
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Pulse shaper and differentiator
Assignee: International Business Machines Corp
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Filing: 1960-11-03
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Granted: 1965-03-16
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Expires: 1980-11-03
Abstract
No abstract record available.
Inventors
- 👤 Genung L Clapper
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:24
CPC Classifications
H; H03; H03K; H03K6/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
168 words
A PULSE SHAPING AND DIFFERENTIATING CIRCUIT COMPRISING: A TRANSISTOR AMPLIFIER HAIVNG EMITTER, BASE AND COLLECTOR ELECTRODES; A SOURCE OF VOLTAGE; A BIASING CIRCUIT CONNECTED BETWEEN SAID VOLTAGE SOURCE AND THE BASE ELECTRODE OF SAID TRANSISTOR FOR NORMALLY BIASING SAID TRANSISTOR OFF; A SOURCE OF INPUT VOLTAGE PULSES; A SOURCE OF RETURN VOLTAGE; AND A SERIES RESONANT CIRCUIT INCLUDING A CAPACITOR HAVING ONE SIDE CONNECTED TO THE SOURCE OF VOLTAGE PULSES AND AN INDUCTOR HAVING ONE SIDE CONNECTED TO THE SOURCE OF RETURN VOLTAGE AND THE JUNCTION BETWEEN THE CAPACITOR AND THE INDUCTOR CONNECTED TO THE BIAS CIRCUIT AND TO THE BASE ELECTRODE AND RESONANT AT A FREQUENCY SLIGHTLY HIGHER THAN THE MAXIMUM FREQUENCY OF THE INPUT PULSES TO STORE ENERGY FROM THE LEADING EDGE OF EACH INPUT PULSE IN THE INDUCTOR AND TO ADD THE ENERGY REMAINING IN THE INDUCTOR TO THE ENERGY FROM THE TRAILING EDGE OF EACH INPUT PULSE TO EFFECT A STRONG TURN ON OF THE TRANSISTOR AMPLIFIER. THEREBY TO PRODUCE A WELL-SHAPED OUTPUT PULSE.
Claim 2
Dependent Claim
168 words
A PULSE SHAPING AND DIFFERENTIATING CIRCUIT COMPRISING: A TRANSISTOR AMPLIFIER HAIVNG EMITTER, BASE AND COLLECTOR ELECTRODES; A SOURCE OF VOLTAGE; A BIASING CIRCUIT CONNECTED BETWEEN SAID VOLTAGE SOURCE AND THE BASE ELECTRODE OF SAID TRANSISTOR FOR NORMALLY BIASING SAID TRANSISTOR OFF; A SOURCE OF INPUT VOLTAGE PULSES; A SOURCE OF RETURN VOLTAGE; AND A SERIES RESONANT CIRCUIT INCLUDING A CAPACITOR HAVING ONE SIDE CONNECTED TO THE SOURCE OF VOLTAGE PULSES AND AN INDUCTOR HAVING ONE SIDE CONNECTED TO THE SOURCE OF RETURN VOLTAGE AND THE JUNCTION BETWEEN THE CAPACITOR AND THE INDUCTOR CONNECTED TO THE BIAS CIRCUIT AND TO THE BASE ELECTRODE AND RESONANT AT A FREQUENCY SLIGHTLY HIGHER THAN THE MAXIMUM FREQUENCY OF THE INPUT PULSES TO STORE ENERGY FROM THE LEADING EDGE OF EACH INPUT PULSE IN THE INDUCTOR AND TO ADD THE ENERGY REMAINING IN THE INDUCTOR TO THE ENERGY FROM THE TRAILING EDGE OF EACH INPUT PULSE TO EFFECT A STRONG TURN ON OF THE TRANSISTOR AMPLIFIER. THEREBY TO PRODUCE A WELL-SHAPED OUTPUT PULSE.
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) | 1968-03-15 | 1968-09-14 | 1969-03-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-15 | 1972-09-14 | 1973-03-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-15 | 1976-09-14 | 1977-03-16 | $7700.00 | Window Closed / Lapsed |