US3363114A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multivibrator circuits using snap action diodes as control elements
Assignee: AT&T Inc
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Filing: 1965-09-17
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Granted: 1968-01-09
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Expires: 1985-09-17
Abstract
No abstract record available.
Inventors
- 👤 John G Fields
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 13:55
CPC Classifications
H; H03; H03K; H03K3/00; H03K3/02; H03K3/313
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
146 words
A SQUARE WAVE AND SAWTOOTH PULSE GENERATOR, WHICH COMPRISES: A SOURCE OF POWER; A PURELY RESISTIVE VOLTAGE-DIVIDER OUTPUT CIRCUIT CONNECTED TO SAID SOURCE OF POWER; A BISTABLE SEMICONDUCTIVE DEVICE HAVING A HIGH IMPEDANCE STATE AND A LOW IMPEDANCE STATE BRIDGED ACROSS A LOWER SECTION OF SAID VOLTAGE DIVIDER CIRCUIT; A TIMING CIRCUIT HAVING A FIRST TIMING RESISTOR, A TIMING CAPACITOR, AND A SECOND TIMING RESISTOR IN SERIES, CONNECTED TO SAID SOURCE OF POWER; DIODE MEANS FOR PLACING SAID FIRST TIMING RESISTOR IN PARALLEL WITH THE UPPER SECTION OF SAID VOLTAGE DIVIDER TO INCREASE THE CURRENT THROUGH SAID BISTABLE DEVICE AND SWITCH SAID DEVICE TO ITS LOW IMPEDANCE STATE; AND TRIGGER MEANS, CONNECTED THROUGH SAID TIMING CAPACITOR, FOR BACK-BIASING SAID DIODE MEANS TO RESWITCH SAID BISTABLE DEVICE BACK TO ITS HIGH IMPEDANCE STATE AND TO DIVERT THE CURRENT THROUGH SAID FIRST TIMING RESISTOR INTO SAID TIMING CAPACITOR.
Claim 2
Dependent Claim
146 words
A SQUARE WAVE AND SAWTOOTH PULSE GENERATOR, WHICH COMPRISES: A SOURCE OF POWER; A PURELY RESISTIVE VOLTAGE-DIVIDER OUTPUT CIRCUIT CONNECTED TO SAID SOURCE OF POWER; A BISTABLE SEMICONDUCTIVE DEVICE HAVING A HIGH IMPEDANCE STATE AND A LOW IMPEDANCE STATE BRIDGED ACROSS A LOWER SECTION OF SAID VOLTAGE DIVIDER CIRCUIT; A TIMING CIRCUIT HAVING A FIRST TIMING RESISTOR, A TIMING CAPACITOR, AND A SECOND TIMING RESISTOR IN SERIES, CONNECTED TO SAID SOURCE OF POWER; DIODE MEANS FOR PLACING SAID FIRST TIMING RESISTOR IN PARALLEL WITH THE UPPER SECTION OF SAID VOLTAGE DIVIDER TO INCREASE THE CURRENT THROUGH SAID BISTABLE DEVICE AND SWITCH SAID DEVICE TO ITS LOW IMPEDANCE STATE; AND TRIGGER MEANS, CONNECTED THROUGH SAID TIMING CAPACITOR, FOR BACK-BIASING SAID DIODE MEANS TO RESWITCH SAID BISTABLE DEVICE BACK TO ITS HIGH IMPEDANCE STATE AND TO DIVERT THE CURRENT THROUGH SAID FIRST TIMING RESISTOR INTO SAID TIMING CAPACITOR.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-01-08 | 1971-07-10 | 1972-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-01-08 | 1975-07-10 | 1976-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-01-08 | 1979-07-10 | 1980-01-09 | $7700.00 | Window Closed / Lapsed |