Patent US3663895A successfully refreshed from Google Patents.
US3663895A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Free running l-c oscillator using silicon-controlled rectifier
Assignee: HOCHHEISER EECTRONICS CORP
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Filing: 1970-11-12
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Granted: 1972-05-16
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Expires: 1990-11-12
Abstract
Abstract There is described an oscillator circuit utilizing a tank circuit and a silicon-controlled rectifier connecting a portion of the tank circuit across a DC potential source. The gate electrode of the silicon-controlled rectifier is controlled from a voltage taken off the tank circuit through a delay network to provide the correct phase relationship between the triggering of the silicon-controlled rectifier and the voltage across the tank circuit.
Inventors
- 👤 Jerome S Hochheiser
- 👤 Louis Zermeno
- 👤 Galen Sitler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 13:58
CPC Classifications
H; H03; H03B; H03B5/00; H03B5/08; H03B5/12; H03B5/1203
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
72 words
An oscillator circuit comprising an L-C tank circuit, a source of d-c power a silicon-controlled rectifier having cathode, anode, and gate electrodes, means connecting the cathode and anode electrodes in series circuit with a portion of the tank circuit across the d-c potential source, a first diode connecting the gate electrode to the cathode electrode of the siliconcontrolled rectifier, and a time delay network connecting the gate electrode to the tank circuit.
Claim 2
Dependent Claim
72 words
An oscillator circuit comprising an L-C tank circuit, a source of d-c power a silicon-controlled rectifier having cathode, anode, and gate electrodes, means connecting the cathode and anode electrodes in series circuit with a portion of the tank circuit across the d-c potential source, a first diode connecting the gate electrode to the cathode electrode of the siliconcontrolled rectifier, and a time delay network connecting the gate electrode to the tank circuit.
Claim 3
Dependent Claim
100 words
An oscillator circuit comprising an L-C tank circuit including an inductive winding having a pair of intermediate winding taps, a source of d-c power, a silicon-controlled rectifier having cathode, anode, and gate electrodes, the anode electrode being connected to one end of the inductive winding, the power source being connected to one of said pair of taps and to the cathode of the silicon-controlled rectifier, a first diode connecting the gate electrode to the cathode electrode of the silicon-controlled rectifier, and a time-delay network connecting the gate electrode to the other of said pair of taps on the inductive winding.
Claim 4
Dependent Claim
100 words
An oscillator circuit comprising an L-C tank circuit including an inductive winding having a pair of intermediate winding taps, a source of d-c power, a silicon-controlled rectifier having cathode, anode, and gate electrodes, the anode electrode being connected to one end of the inductive winding, the power source being connected to one of said pair of taps and to the cathode of the silicon-controlled rectifier, a first diode connecting the gate electrode to the cathode electrode of the silicon-controlled rectifier, and a time-delay network connecting the gate electrode to the other of said pair of taps on the inductive winding.
Claim 5
Dependent Claim
17 words
ApparatUs as defined in claim 2 wherein the delay network is a resistor and capacitor in parallel.
Claim 6
Dependent Claim
35 words
Apparatus as defined in claim 1 further including a second diode in series with and connecting the delay network to the gate electrode, and a variable resistor connecting the delay network to the cathode electrode.
Claim 7
Dependent Claim
26 words
Apparatus as defined in claim 3 including a second delay network including a resistor and capacitor in parallel connected in series with the first delay network.
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) | 1975-05-16 | 1975-11-15 | 1976-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-16 | 1979-11-15 | 1980-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-16 | 1983-11-15 | 1984-05-16 | $7700.00 | Window Closed / Lapsed |