Patent US4734658A successfully refreshed from Google Patents.
US4734658A
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US
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Low voltage driven oscillator circuit
Assignee: Honeywell Inc
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Filing: 1987-08-14
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Granted: 1988-03-29
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Expires: 2007-08-14
Abstract
Abstract An ultra low voltage energized oscillator for providing a stepped-up alternating current voltage is provided. This oscillator utilizes a field effect transistor with a high impedance network including a capacitor coupling a feedback signal from a secondary output winding to a primary input winding of a transformer.
Inventors
- 👤 John E. Bohan, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:54
CPC Classifications
H; H03; H03B; H03B28/00; H02; H02M; H02M3/00; H02M3/02; H02M3/04; H02M3/10; H02M3/145; H02M3/155; H02M3/22; H02M3/24; H02M3/28; H02M3/325; H02M3/335; H02M3/338; H03K; H03K3/00; H03K3/02; H03K3/353; H03K3/354
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
133 words
A low voltage driven oscillator circuit, including: transformer means having a first winding and a second winding with said windings magnetically coupled; solid state current control means having current conducting path means and further including current control electrode means; said current conducting path means and said first winding connected in a series circuit and said series circuit adapted to be connected to a source of low voltage, direct current potential; high impedance circuit means including connection means connecting said current control electrode to a first end of said second winding and to a first output conductor for said oscillator circuit; and common connection means connecting a second output conductor for said oscillator circuit to a second end of said second winding which in turn is connected to said solid state current control means.
Claim 2
Dependent Claim
133 words
A low voltage driven oscillator circuit, including: transformer means having a first winding and a second winding with said windings magnetically coupled; solid state current control means having current conducting path means and further including current control electrode means; said current conducting path means and said first winding connected in a series circuit and said series circuit adapted to be connected to a source of low voltage, direct current potential; high impedance circuit means including connection means connecting said current control electrode to a first end of said second winding and to a first output conductor for said oscillator circuit; and common connection means connecting a second output conductor for said oscillator circuit to a second end of said second winding which in turn is connected to said solid state current control means.
Claim 3
Dependent Claim
32 words
A low voltage driven oscillator circuit as claimed in claim 1 wherein said transformer means is a two winding transformer; and said solid state current control means is a field effect transistor.
Claim 4
Dependent Claim
20 words
A low voltage driven oscillator circuit as claimed in claim 2 wherein said high impedance circuit means includes a capacitor.
Claim 5
Dependent Claim
31 words
A low voltage driven oscillator circuit as claimed in claim 3 wherein said high impedance circuit means is a parallel combination of said capacitor and a resistor of high ohmic value.
Claim 6
Dependent Claim
33 words
A low voltage driven oscillator circuit as claimed in claim 4 wherein said resistor is at least one megohm; and said source of low voltage, direct current potential is less than one volt.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-03-29 | 1991-09-28 | 1992-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-03-29 | 1995-09-28 | 1996-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-03-29 | 1999-09-28 | 2000-03-29 | $7700.00 | Window Closed / Lapsed |