US4734658A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Low voltage driven oscillator circuit
Assignee: Honeywell Inc
•
Filing: 1987-08-14
•
Granted: 1988-03-29
•
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 17:09
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.
References Cited (Backward Citations)
US2988709A
Cited
US2985846A
Cited
US3299369A
Cited
US3313954A
Cited
US3678412A
Cited
US4015609A
Cited
US4322724A
Cited
US4363005A
Cited
US4384254A
Cited
US4696639A
Cited
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 |