US4095163A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transient voltage suppression circuit
Assignee: Control Concepts Corp
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Filing: 1976-06-01
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Granted: 1978-06-13
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Expires: 1996-06-01
Abstract
Abstract Circuit for reducing voltage oscillations created by transient pulses in the supply circuit in which a voltage-sensitive breakdown device is placed in series with the capacitor of an inductor-capacitor low pass filter. The breakdown device, having a finite threshold, provides a discontinuity in conduction during the noise pulse excursions to thereby damp any resulting oscillations.
Inventors
- 👤 Herbert R. Montague
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 03:56
CPC Classifications
H; H02; H02H; H02H9/00; H02H9/005
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
80 words
In a circuit having a source of varying electrical potential and a load connected across said source, a filter circuit for damping oscillations caused by transient noise pulses consisting of: an inductor connected to one side of said source in series with said load; a capacitor connected between the load side of said inductor and the other side of said source in parallel with said load; and breakdown means in series with said capacitor and having a predetermined breakdown potential.
Claim 2
Dependent Claim
80 words
In a circuit having a source of varying electrical potential and a load connected across said source, a filter circuit for damping oscillations caused by transient noise pulses consisting of: an inductor connected to one side of said source in series with said load; a capacitor connected between the load side of said inductor and the other side of said source in parallel with said load; and breakdown means in series with said capacitor and having a predetermined breakdown potential.
Claim 3
Dependent Claim
19 words
The circuit as described in claim 1 wherein said breakdown means is a pair of oppositely-poled, series-connected Zener diodes.
Claim 4
Dependent Claim
23 words
The circuit as described in claim 1 wherein said breakdown means is connected between said load side of said inductor and said capacitor.
Claim 5
Dependent Claim
18 words
The circuit as described in claim 1 wherein said breakdown means is a plurality of oppositely-poled semiconductor devices.
Claim 6
Dependent Claim
20 words
The circuit as described in claim 1 wherein said breakdown means includes at least one pair of parallel, oppositely-poled rectifiers.
Claim 7
Dependent Claim
19 words
The circuit as described in claim 2 wherein said breakdown means includes at least one pair of semiconductor devices.
Claim 8
Dependent Claim
29 words
The circuit as described in claim 2 wherein said breakdown means has a similar predetermined breakdown potential irrespective of the direction of current flow between said inductor and capacitor.
Claim 9
Dependent Claim
20 words
The circuit as described in claim 1 wherein said breakdown voltage less than the peak value of said potential source.
References Cited (Backward Citations)
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US3373291A
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Cited
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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) | 1981-06-12 | 1981-12-12 | 1982-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-06-12 | 1985-12-12 | 1986-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-06-12 | 1989-12-12 | 1990-06-13 | $7700.00 | Window Closed / Lapsed |