US4439819A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Switching regulator with controlled simulated load
Assignee: Boeing North American Inc
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Filing: 1982-08-09
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Granted: 1984-03-27
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Expires: 2002-08-09
Abstract
Abstract A switching regulator with controlled simulated load has a control which connects and disconnects the simulated load to the output of the regulator. The control is responsive to an error signal of a first comparator. A second comparator receives the output of said first comparator and produces a control signal for the simulated load when the regulator output reaches a predetermined level.
Inventors
- 👤 John F. Regan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 15:51
CPC Classifications
H; H02; H02M; H02M7/00; H02M7/42; H02M7/44; H02M7/48; H02M7/53; H02M7/537; H02M7/5383; H02M7/53846; H02M3/00; H02M3/22; H02M3/24; H02M3/28; H02M3/325; H02M3/335; H02M3/337; H02M3/3376; H02M3/3378
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
129 words
In a switching regulator, the improvement comprising: means for applying a simulated load across the output terminals of the regulator; control means responsive to the output of said regulator for connecting and disconnecting said load simulating means across said output terminals in response to the level of the regulator output; a first comparator for producing an error control signal in response to a differential between a reference signal representing a selected output and a feedback signal representing the actual output of the regulator, and said control means being responsive to said error control signal; and a second comparator, included in said control means, for receiving the output of said first comparator and producing a control signal for said load simulating means when the regulator output reaches a predetermined level.
Claim 2
Dependent Claim
129 words
In a switching regulator, the improvement comprising: means for applying a simulated load across the output terminals of the regulator; control means responsive to the output of said regulator for connecting and disconnecting said load simulating means across said output terminals in response to the level of the regulator output; a first comparator for producing an error control signal in response to a differential between a reference signal representing a selected output and a feedback signal representing the actual output of the regulator, and said control means being responsive to said error control signal; and a second comparator, included in said control means, for receiving the output of said first comparator and producing a control signal for said load simulating means when the regulator output reaches a predetermined level.
Claim 3
Dependent Claim
59 words
A switching regulator as set forth in claim 1 wherein said load simulating means is variable so that different levels of simulated load can be applied across the output terminals of the regulator, and said control means includes means for automatically adjusting the simulated load level in inverse proportion to variations in the actual external load on the regulator.
Claim 4
Dependent Claim
51 words
A switching regulator as set forth in claim 1 wherein said load simulating means comprises a transistor connected across the output terminals of the regulator, and said control means generates a control signal for varying the conductivity of said transistor according to variations in the actual external load on the regulator.
References Cited (Backward Citations)
US4037271A
Cited
US4172277A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-03-27 | 1987-09-26 | 1988-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-03-27 | 1991-09-26 | 1992-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-03-27 | 1995-09-26 | 1996-03-27 | $7700.00 | Window Closed / Lapsed |