Patent US4947102A successfully refreshed from Google Patents.
US4947102A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Feedback loop gain compensation for a switched resistor regulator
Assignee: Newport Corp USA
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Filing: 1988-11-08
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Granted: 1990-08-07
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Expires: 2008-11-08
Abstract
Abstract A switched resistor regulator is constructed whose duty cycle response is nonlinear with small changes in input control voltage. Specifically, the response of a pulse-width modulator is made to increase less than linearly with small changes in input control voltage. In a preferred embodiment, the pulse-width modulator is altered by comparing the input control voltage with a nonlinear reference signal, rather than the substantially linear reference signal which is used in prior art pulse-width modulators. Specifically, the nonlinear reference signal may be generated by a nonlinear reference voltage circuit, such as an RC charging circuit, or such as a D/A converter controlled by a clocked programmable microprocessor.
Inventors
- 👤 John P. Ekstrand
- 👤 Kevin Holsinger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:14
CPC Classifications
G; G05; G05F; G05F1/00; G05F1/10; G05F1/625; G05F1/63; G05F1/648
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
44 words
A switched resistor regulator, comprising resistive means; switch means for switching said resistive means into and out of electrical connection; means responsive to a signal for controlling the operation of said switch; and means for altering said response to said signal to be nonlinear.
Claim 2
Dependent Claim
44 words
A switched resistor regulator, comprising resistive means; switch means for switching said resistive means into and out of electrical connection; means responsive to a signal for controlling the operation of said switch; and means for altering said response to said signal to be nonlinear.
Claim 3
Dependent Claim
24 words
A switched resistor regulator as in claim 1, wherein said signal comprises one of the group composed of: a digital signal, an analog signal.
Claim 4
Dependent Claim
46 words
A switched resistor regulator, comprising resistive means; switch means for switching said resistive means into and out of electrical connection; means responsive to a control voltage for controlling the operation of said switch; and means for altering said response to said control voltage to be nonlinear.
Claim 5
Dependent Claim
46 words
A switched resistor regulator, comprising resistive means; switch means for switching said resistive means into and out of electrical connection; means responsive to a control voltage for controlling the operation of said switch; and means for altering said response to said control voltage to be nonlinear.
Claim 6
Dependent Claim
58 words
A switched resistor regulator, comprising resistive means; switch means for switching said resistive means into and out of electrical connection; pulse-width modulator means responsive to a control voltage for generating a pulse train for controlling said switch means; and means for altering the duty cycle of said pulse train to be nonlinear with changes in said control voltage.
Claim 7
Dependent Claim
58 words
A switched resistor regulator, comprising resistive means; switch means for switching said resistive means into and out of electrical connection; pulse-width modulator means responsive to a control voltage for generating a pulse train for controlling said switch means; and means for altering the duty cycle of said pulse train to be nonlinear with changes in said control voltage.
Claim 8
Dependent Claim
35 words
A switched resistor regulator as in claim 4, comprising means for altering said response so that said duty cycle of said pulse train varies at a nonlinearly increasing rate with increases in said control voltage.
Claim 9
Dependent Claim
58 words
A switched resistor regulator, comprising resistive means; switch means for switching said resistive means into and out of electrical connection; means responsive to a signal for controlling the operation of said switch; and means for altering said response to said signal so that a response of said switched resistor regulator is linear with changes in said control voltage.
Claim 10
Dependent Claim
58 words
A switched resistor regulator, comprising resistive means; switch means for switching said resistive means into and out of electrical connection; means responsive to a signal for controlling the operation of said switch; and means for altering said response to said signal so that a response of said switched resistor regulator is linear with changes in said control voltage.
Claim 11
Dependent Claim
24 words
A switched resistor regulator as in claim 6, wherein said signal comprises one of the group composed of: a digital signal, an analog signal.
Claim 12
Dependent Claim
60 words
A switched resistor regulator, comprising resistive means; switch means for switching said resistive means into and out of electrical connection; means responsive to a control voltage for controlling the operation of said switch; and means for altering said response to said control voltage so that a response of said switched resistor regulator is linear with changes in said control voltage.
Claim 13
Dependent Claim
60 words
A switched resistor regulator, comprising resistive means; switch means for switching said resistive means into and out of electrical connection; means responsive to a control voltage for controlling the operation of said switch; and means for altering said response to said control voltage so that a response of said switched resistor regulator is linear with changes in said control voltage.
Claim 14
Dependent Claim
44 words
In a switched resistor regulator, a pulse-width modulator, comprising means for receiving a signal indicative of a duty cycle; means responsive to said signal for generating a pulse train with a duty cycle, said duty cycle response being nonlinear with changes in said signal.
Claim 15
Dependent Claim
44 words
In a switched resistor regulator, a pulse-width modulator, comprising means for receiving a signal indicative of a duty cycle; means responsive to said signal for generating a pulse train with a duty cycle, said duty cycle response being nonlinear with changes in said signal.
Claim 16
Dependent Claim
23 words
A pulse-width modulator as in claim 9, wherein said signal comprises one of the group composed of: a digital signal, an analog signal.
Claim 17
Dependent Claim
42 words
In a switched resistor regulator, a pulse-width modulator, comprising means for generating a control voltage; means responsive to said control voltage for generating a pulse train with a duty cycle, said duty cycle response being nonlinear with changes in said control voltage.
Claim 18
Dependent Claim
42 words
In a switched resistor regulator, a pulse-width modulator, comprising means for generating a control voltage; means responsive to said control voltage for generating a pulse train with a duty cycle, said duty cycle response being nonlinear with changes in said control voltage.
Claim 19
Dependent Claim
32 words
A pulse-width modulator as in claim 11, wherein said responsive means comprises means for receiving a predetermined nonlinear reference signal; and means for comparing said control voltage with said nonlinear reference signal.
Claim 20
Dependent Claim
32 words
A pulse-width modulator as in claim 11, comprising means for generating a predetermined nonlinear reference signal; and said responsive means comprises means for comparing said control voltage with said nonlinear reference signal.
Claim 21
Dependent Claim
21 words
A pulse-width modulator as in claim 13, wherein said means for generating comprises a resistor-capacitor circuit powered by a predetermined voltage.
Claim 22
Dependent Claim
76 words
In a switched resistor regulator, a pulse-width modulator, comprising means for receiving a control voltage; means responsive to said control voltage for generating a pulse train with a duty cycle, said duty cycle response being nonlinear with changes in said control voltage; said responsive means comprises means for generating a nonlinear reference signal, and means for comparing said control voltage with said nonlinear reference signal; wherein said means for generating comprises a digital to analog converter.
Claim 23
Dependent Claim
76 words
In a switched resistor regulator, a pulse-width modulator, comprising means for receiving a control voltage; means responsive to said control voltage for generating a pulse train with a duty cycle, said duty cycle response being nonlinear with changes in said control voltage; said responsive means comprises means for generating a nonlinear reference signal, and means for comparing said control voltage with said nonlinear reference signal; wherein said means for generating comprises a digital to analog converter.
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) | 1993-08-06 | 1994-02-05 | 1994-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-08-06 | 1998-02-05 | 1998-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-08-06 | 2002-02-05 | 2002-08-07 | $7700.00 | Window Closed / Lapsed |