Patent US4414598A successfully refreshed from Google Patents.
US4414598A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Regulated power supply
Assignee: F Hoffmann La Roche AG
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Filing: 1982-06-04
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Granted: 1983-11-08
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Expires: 2002-06-04
Abstract
Abstract The present invention relates to a power supply which includes a switching regulator and an over-current detector, having a reference circuit for providing an over-current threshold level. A means is provided by the present invention for adjusting the over-current threshold level without interrupting the system by utilizing a switch to provide an inhibit signal to a fault shut down circuit and for inserting a component into the reference circuit to modify the over-current threshold level to the desired adjustment level.
Inventors
- 👤 John R. Nowell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 09:46
CPC Classifications
H; H02; H02H; H02H3/00; H02H3/006
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
123 words
A power supply, comprising: (a) switching regulator means for outputting a regulated DC voltage over a variable range of DC current; (b) over-current detector means, having a reference circuit, for detecting when said DC current exceeds a predetermined threshold, said predetermined threshold established by said reference circuit, thereupon outputting an over-current signal causing said switching regulator means to be shut down; (c) a circuit element; (d) gate means for operatively connecting said over-current detector means to said switching regulator means; and (e) switch means for manually operatively connecting: (i) said circuit element to said reference circuit to modify said predetermined threshold, and (ii) an inhibit signal to said gate means thereby inhibiting said over-current signal from being transmitted to said switching regulator means.
Claim 2
Dependent Claim
123 words
A power supply, comprising: (a) switching regulator means for outputting a regulated DC voltage over a variable range of DC current; (b) over-current detector means, having a reference circuit, for detecting when said DC current exceeds a predetermined threshold, said predetermined threshold established by said reference circuit, thereupon outputting an over-current signal causing said switching regulator means to be shut down; (c) a circuit element; (d) gate means for operatively connecting said over-current detector means to said switching regulator means; and (e) switch means for manually operatively connecting: (i) said circuit element to said reference circuit to modify said predetermined threshold, and (ii) an inhibit signal to said gate means thereby inhibiting said over-current signal from being transmitted to said switching regulator means.
Claim 3
Dependent Claim
18 words
A power supply, according to claim 1, further comprising: indicator means operatively coupled to said over-current detector means.
Claim 4
Dependent Claim
141 words
A power supply comprising: (a) at least one switching regulator means for outputting a regulated DC voltage over a variable range of DC current; (b) at least one over-current detector means, for detecting when said range of DC current exceeds a predetermined threshold, thereupon outputting an over-current signal causing said switching regulator means to be shut down; (c) a reference circuit, operatively connected to each over-current detector means, for providing said predetermined threshold; (d) a circuit element; (e) gate means for operatively connecting each of said over-current detector means to each of said switching regulator means; and (f) switch means for manually operatively connecting: (i) said circuit element to said reference circuit to modify said predetermined threshold, and (ii) an inhibit signal to said gate means thereby inhibiting said over-current signal from being transmitted to each of said switching regulator means.
Claim 5
Dependent Claim
141 words
A power supply comprising: (a) at least one switching regulator means for outputting a regulated DC voltage over a variable range of DC current; (b) at least one over-current detector means, for detecting when said range of DC current exceeds a predetermined threshold, thereupon outputting an over-current signal causing said switching regulator means to be shut down; (c) a reference circuit, operatively connected to each over-current detector means, for providing said predetermined threshold; (d) a circuit element; (e) gate means for operatively connecting each of said over-current detector means to each of said switching regulator means; and (f) switch means for manually operatively connecting: (i) said circuit element to said reference circuit to modify said predetermined threshold, and (ii) an inhibit signal to said gate means thereby inhibiting said over-current signal from being transmitted to each of said switching regulator means.
Claim 6
Dependent Claim
22 words
A power supply, according to claim 3, further comprising: at least one indicator means operatively coupled to a corresponding over-current detector means.
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) | 1986-11-07 | 1987-05-09 | 1987-11-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-11-07 | 1991-05-09 | 1991-11-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-11-07 | 1995-05-09 | 1995-11-08 | $7700.00 | Window Closed / Lapsed |