US4401895A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Supply for providing uninterruptible d-c power to a load
Assignee: Reliance Comm Tec Corp
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Filing: 1982-09-20
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Granted: 1983-08-30
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Expires: 2002-09-20
Abstract
Abstract A system for supplying uninterruptible d-c power to a load. When the system operates in its normal mode, d-c load power is provided by the combination of a rectifier and a power switch. The d-c output of the rectifier may be used by a d-c to d-c down converter to recharge and maintain a battery if a separately powered source is not available for that purpose. A d-c to d-c up converter provides a relatively high amplitude d-c voltage from the battery voltage. The amplitude of this voltage is lower than the amplitude of the d-c output of the rectifier in the normal mode. When the amplitude of the rectifier output falls below the d-c to d-c up converter output voltage, the system changes to its failure mode and the battery provides d-c power to the load. The operation of the down converter if it is included in the system is inhibited.
Inventors
- 👤 Dennis W. Petkovsek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:09
CPC Classifications
H; H02; H02M; H02M3/00; H02M3/02; H02M3/04; H02M3/10; H02J; H02J9/00; H02J9/04; H02J9/06; H02J9/061
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
228 words
A circuit adapted for use with a power supply to thereby form in combination therewith a system to provide uninterruptible d-c power to a load said supply being of the type which includes rectifying means responsive to an a-c signal for generating a d-c signal whose relatively large amplitude varies as a function of the amplitude of the a-c signal at the output of said rectifying means and power switching means whose input is directly connected to said rectifying means output to thereby generate from said rectifying means output signal a d-c signal for supplying power to said load when said system operates in a normal mode, said circuit comprising: (a) source means for providing a relatively low amplitude d-c voltage; (b) up converter means having an output and responsive to said source means voltage for generating at said output a d-c voltage of relatively high amplitude said amplitude being less than said rectifying means output d-c signal amplitude when said system operates in its normal mode; and (c) coupling means for connecting said up converter means output to said rectifying means output said coupling means being nonconductive when said system operates in said normal mode and becoming conductive when said rectifying means output signal amplitude falls below said up converter means output voltage amplitude whereby said system uses said battery to supply d-c power to said load.
Claim 2
Dependent Claim
228 words
A circuit adapted for use with a power supply to thereby form in combination therewith a system to provide uninterruptible d-c power to a load said supply being of the type which includes rectifying means responsive to an a-c signal for generating a d-c signal whose relatively large amplitude varies as a function of the amplitude of the a-c signal at the output of said rectifying means and power switching means whose input is directly connected to said rectifying means output to thereby generate from said rectifying means output signal a d-c signal for supplying power to said load when said system operates in a normal mode, said circuit comprising: (a) source means for providing a relatively low amplitude d-c voltage; (b) up converter means having an output and responsive to said source means voltage for generating at said output a d-c voltage of relatively high amplitude said amplitude being less than said rectifying means output d-c signal amplitude when said system operates in its normal mode; and (c) coupling means for connecting said up converter means output to said rectifying means output said coupling means being nonconductive when said system operates in said normal mode and becoming conductive when said rectifying means output signal amplitude falls below said up converter means output voltage amplitude whereby said system uses said battery to supply d-c power to said load.
Claim 3
Dependent Claim
12 words
The circuit of claim 1 wherein said source means is a battery.
Claim 4
Dependent Claim
66 words
The circuit of claim 1 further including down converter means having an input directly connected to said rectifying means output and an output directly connected to said source means said down converter means responsive to said rectifying means output voltage for generating a d-c signal having a relatively low amplitude said signal recharging and maintaining said source means when said supply operates in its normal mode.
Claim 5
Dependent Claim
56 words
The circuit of claim 3 wherein said up converter means includes means for generating a signal to inhibit the operation of said down converter means when said system uses said battery to supply d-c power to said load and said down converter means includes means responsive to said signal to inhibit said down converter means operation.
Claim 6
Dependent Claim
80 words
The circuit of claim 1 or 3 further including alarm and detection means responsive to said source means d-c voltage amplitude for generating an alarm signal when said amplitude falls to a first predetermined voltage and for generating a signal to said up converter means to inhibit the operation thereof when said amplitude falls to a second and lower predetermined voltage said inhibiting signal turning off said up converter to thereby terminate the supply of d-c power to said load.
Claim 7
Dependent Claim
300 words
A circuit adapted for use with a power supply to thereby form in combination therewith a system to provide uninterruptible d-c power to a load said supply being of the type which includes rectifying means responsive to an a-c signal for generating a d-c signal whose relatively large amplitude varies as a function of the amplitude of the a-c signal at the output of said rectifying means and power switching means whose input is directly connected to said rectifying means output to thereby generate from said rectifying means output signal a d-c signal for supplying power to said load when said system operates in a normal mode, said circuit comprising: (a) source means for providing a relatively low amplitude d-c voltage; (b) up converter means having an output and responsive to said source means voltage for generating at said output a d-c voltage of relatively high amplitude said amplitude being less than said rectifying means output d-c signal amplitude when said system operates in its normal mode; (c) alarm and detection means responsive to said source means d-c voltage amplitude for generating an alarm signal when said amplitude falls to a first predetermined voltage and for generating a signal to said up converter means to inhibit the operation thereof when said amplitude falls to a second and lower predetermined voltage said inhibiting signal turning off said up converter to thereby terminate the supply of d-c power to said load; and (d) coupling means for connecting said up converter means output to said rectifying means output said coupling means being nonconductive when said system operates in said normal mode and becoming conductive when said rectifying means output signal amplitude falls below said up converter means output voltage amplitude whereby said system uses said battery to supply d-c power to said load.
Claim 8
Dependent Claim
300 words
A circuit adapted for use with a power supply to thereby form in combination therewith a system to provide uninterruptible d-c power to a load said supply being of the type which includes rectifying means responsive to an a-c signal for generating a d-c signal whose relatively large amplitude varies as a function of the amplitude of the a-c signal at the output of said rectifying means and power switching means whose input is directly connected to said rectifying means output to thereby generate from said rectifying means output signal a d-c signal for supplying power to said load when said system operates in a normal mode, said circuit comprising: (a) source means for providing a relatively low amplitude d-c voltage; (b) up converter means having an output and responsive to said source means voltage for generating at said output a d-c voltage of relatively high amplitude said amplitude being less than said rectifying means output d-c signal amplitude when said system operates in its normal mode; (c) alarm and detection means responsive to said source means d-c voltage amplitude for generating an alarm signal when said amplitude falls to a first predetermined voltage and for generating a signal to said up converter means to inhibit the operation thereof when said amplitude falls to a second and lower predetermined voltage said inhibiting signal turning off said up converter to thereby terminate the supply of d-c power to said load; and (d) coupling means for connecting said up converter means output to said rectifying means output said coupling means being nonconductive when said system operates in said normal mode and becoming conductive when said rectifying means output signal amplitude falls below said up converter means output voltage amplitude whereby said system uses said battery to supply d-c power to said load.
Claim 9
Dependent Claim
66 words
The circuit of claim 6 further including down converter means having an input directly connected to said rectifying means output and an output directly connected to said source means said down converter means responsive to said rectifying means output voltage for generating a d-c signal having a relatively low amplitude said signal recharging and maintaining said source means when said supply operates in its normal mode.
Claim 10
Dependent Claim
56 words
The circuit of claim 7 wherein said up converter means includes means for generating a signal to inhibit the operation of said down converter means when said system uses said battery to supply d-c power to said load and said down converter means includes means responsive to said signal to inhibit said down converter means operation.
Claim 11
Independent Claim
217 words
A system for providing uninterruptible d-c power to a load comprising: (a) rectifying means responsive to an a-c signal for generating at its output a d-c voltage having a relatively large amplitude which varies as a function of the amplitude of said a-c signal; (b) source means for providing a relatively low amplitude d-c voltage; (c) up converter means having an output and responsive to said source means voltage for generating at said output a d-c voltage of relatively high amplitude; (d) power switching means having an input directly connected to said rectifying means output and an output connected to said load said switching means responsive to said rectifying means output voltage for providing d-c power to said load from said a-c signal when said rectifying means d-c voltage amplitude exceeds said up converter output voltage amplitude and responsive to said up converter means d-c output voltage for providing power to said load from said battery when said rectifying means d-c voltage falls below said up converter output voltage amplitude; and (e) coupling means for connecting said up converter means output to said rectifying means output said coupling means being nonconductive when said a-c signal is used to supply power to said load and becoming conductive when said battery is used to provide power to said load.
Claim 12
Independent Claim
217 words
A system for providing uninterruptible d-c power to a load comprising: (a) rectifying means responsive to an a-c signal for generating at its output a d-c voltage having a relatively large amplitude which varies as a function of the amplitude of said a-c signal; (b) source means for providing a relatively low amplitude d-c voltage; (c) up converter means having an output and responsive to said source means voltage for generating at said output a d-c voltage of relatively high amplitude; (d) power switching means having an input directly connected to said rectifying means output and an output connected to said load said switching means responsive to said rectifying means output voltage for providing d-c power to said load from said a-c signal when said rectifying means d-c voltage amplitude exceeds said up converter output voltage amplitude and responsive to said up converter means d-c output voltage for providing power to said load from said battery when said rectifying means d-c voltage falls below said up converter output voltage amplitude; and (e) coupling means for connecting said up converter means output to said rectifying means output said coupling means being nonconductive when said a-c signal is used to supply power to said load and becoming conductive when said battery is used to provide power to said load.
Claim 13
Dependent Claim
12 words
The system of claim 9 wherein said source means is a battery.
Claim 14
Dependent Claim
12 words
The system of claim 9 wherein said coupling means is a diode.
Claim 15
Dependent Claim
70 words
The system of claim 9 further including down converter means having an input directly connected to said rectifying means output and an output directly connected to said source means said down converter means responsive to said rectifying means output voltage for generating a d-c signal having a relatively low amplitude said signal recharging and maintaining said source means when said a-c signal is used to supply power to said load.
Claim 16
Dependent Claim
52 words
The system of claim 12 wherein said up converter means includes means for generating a signal to inhibit the operation of said down converter means when said system uses said battery to supply power to said load and said down converter means includes means responsive to said signal for inhibiting its operation.
Claim 17
Dependent Claim
80 words
The system of claim 9 or 12 further including alarm and detection means responsive to said source means d-c voltage amplitude for generating an alarm signal when said amplitude falls to a first predetermined voltage and for generating a signal to said up converter means to inhibit the operation thereof when said amplitude falls to a second and lower predetermined voltage said inhibiting signal turning off said up converter to thereby terminate the supply of d-c power to said load.
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) | 1986-08-29 | 1987-02-28 | 1987-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-08-29 | 1991-02-28 | 1991-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-08-29 | 1995-02-28 | 1995-08-30 | $7700.00 | Window Closed / Lapsed |