Patent US3579085A successfully refreshed from Google Patents.
US3579085A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Power supply for providing main and standby sources of power
Assignee: ACOUSTIC RESEARCH Inc
•
Filing: 1968-09-13
•
Granted: 1971-05-18
•
Expires: 1988-09-13
Abstract
Abstract A power supply for high-fidelity amplifier and having a pair of full-wave rectifiers, one with its input permanently connected to line power, the other with a switch for connecting and disconnecting it to line power. The output of the auxiliary rectifier is fed to an input terminal for the amplifier so that portions of the latter can be kept energized at low levels. The other or main rectifier is connected to a regulator to provide a regulated supply and the output of the latter is diode connected to the output of the auxiliary rectifier so that when the main rectifier is turned on it will supply all of the necessary power to all portions of the amplifier.
Inventors
- 👤 Robert Grodinsky
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 11:06
CPC Classifications
H; H02; H02M; H02M7/00; H02M7/02; H02M7/04; H02M7/06; G; G05; G05F; G05F1/00; G05F1/10; G05F1/46; G05F1/56; G05F1/577
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
132 words
A power supply apparatus comprising in combination: input terminal means to which may be applied a source of power; first rectifier means connected at its input to said terminal means; second rectifier means; means coupled to said second rectifier means for regulating the magnitude of the DC output from said second rectifier means; switching means for selectively connecting and disconnecting said second rectifier means from said terminal means; and diode means for coupling the outputs of both said regulating means and said first rectifier means, said diode means being poled to conduct only when said second rectifier means is energized upon connection of the latter to said terminal means thereby isolating said first rectifier means from current drain when said second rectifier means is both connected and disconnected from said terminal means.
Claim 2
Dependent Claim
132 words
A power supply apparatus comprising in combination: input terminal means to which may be applied a source of power; first rectifier means connected at its input to said terminal means; second rectifier means; means coupled to said second rectifier means for regulating the magnitude of the DC output from said second rectifier means; switching means for selectively connecting and disconnecting said second rectifier means from said terminal means; and diode means for coupling the outputs of both said regulating means and said first rectifier means, said diode means being poled to conduct only when said second rectifier means is energized upon connection of the latter to said terminal means thereby isolating said first rectifier means from current drain when said second rectifier means is both connected and disconnected from said terminal means.
Claim 3
Dependent Claim
17 words
A power supply apparatus as defined in claim 1 wherein said rectifier means comprise full-wave, bridge rectifiers.
Claim 4
Dependent Claim
24 words
A power supply apparatus as defined in claim 1 wherein said second rectifier means is a lower impedance source than said first rectifier means.
Claim 5
Dependent Claim
84 words
A power supply apparatus as defined in claim 1 wherein said first rectifier means comprises a first full-wave rectifier bridge, said second rectifier means comprises a second full-wave rectifier bridge connected to a low output impedance power regulating means, said means for selectively connecting is a switch, and said means for coupling comprises a diode connected between the outputs of said regulating means and said first rectifier bridge and poled to conduct only when said second bridge is energized upon closure of said switch.
Claim 6
Dependent Claim
234 words
A power supply apparatus for supplying a main and a standby source of power, said apparatus comprising, in combination: input terminal means to which may be applied a source of AC power; first and second output terminals; first rectifier means connected at its input to said terminal means for providing a standby DC signal to said first of said output terminals; second rectifier means for providing a main DC signal when connected to said input terminal means; means coupled between said second rectifier means and said second of said output terminals for regulating the magnitude of the DC output from said second rectifier means, when connected to said input terminal means; switching means for selectively connecting and disconnecting said second rectifier means from said input terminal means; and diode means for coupling the outputs of both said regulating means and said first rectifier means, said diode means being poled to conduct so as to apply the output of said regulating means to said second output terminal and the output of said regulating means together with the output of said first rectifier means to said first output terminal only when said second rectifier means is energized to provide said main DC signal upon connection of the latter to said input terminal means thereby isolating said first rectifier means from current drain when said second rectifier means is both connected and disconnected from said terminal means.
Claim 7
Dependent Claim
234 words
A power supply apparatus for supplying a main and a standby source of power, said apparatus comprising, in combination: input terminal means to which may be applied a source of AC power; first and second output terminals; first rectifier means connected at its input to said terminal means for providing a standby DC signal to said first of said output terminals; second rectifier means for providing a main DC signal when connected to said input terminal means; means coupled between said second rectifier means and said second of said output terminals for regulating the magnitude of the DC output from said second rectifier means, when connected to said input terminal means; switching means for selectively connecting and disconnecting said second rectifier means from said input terminal means; and diode means for coupling the outputs of both said regulating means and said first rectifier means, said diode means being poled to conduct so as to apply the output of said regulating means to said second output terminal and the output of said regulating means together with the output of said first rectifier means to said first output terminal only when said second rectifier means is energized to provide said main DC signal upon connection of the latter to said input terminal means thereby isolating said first rectifier means from current drain when said second rectifier means is both connected and disconnected from said terminal means.
References Cited (Backward Citations)
CA707060A
Cited
US2875397A
Cited
US2891209A
Cited
US2969494A
Cited
GB855580A
Cited
DE1126494B
Cited
US3289069A
Cited
US3470451A
Cited
US3514532A
Cited
US3496446A
Cited
US3500169A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-05-17 | 1974-11-16 | 1975-05-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-17 | 1978-11-16 | 1979-05-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-17 | 1982-11-16 | 1983-05-18 | $7700.00 | Window Closed / Lapsed |