Patent US3652829A successfully refreshed from Google Patents.
US4100595A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Circuit for the production of an output voltage depending on an input direct voltage and a given desired voltage
Assignee: Wincor Nixdorf International GmbH
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Filing: 1976-11-24
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Granted: 1978-07-11
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Expires: 1996-11-24
Abstract
Abstract A circuit for the production of an output voltage generated based upon an input direct voltage and a given desired voltage. A series connection comprises a longitudinal regulating member, an inductor and a push-pull current transformer which produces the output voltage. The input direct voltage is fed to the push-pull current transformer. The push-pull current transformer includes a push-pull transformer having push-pull primary winding and a secondary winding. In addition, the push-pull current transformer includes switching transistors which are switched on and off in push-pull by a control circuit. The control circuit delivers a suitable cyclical changing control signal to the switching transistors. Circuitry is provided for minimizing if not eliminating spikes in the current occurring during a switching of the switching transistors. As a result, the switching transistors remain free from excessive voltages which can damage same.
Inventors
- 👤 Werner Pollmeier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:47
CPC Classifications
H; H02; H02M; H02M3/00; H02M3/22; H02M3/24; H02M3/28; H02M3/325; H02M3/335; H02M3/337; H02M3/3376; H02M3/3378; H02M7/00; H02M7/42; H02M7/44; H02M7/48; H02M7/53; H02M7/537; H02M7/538; H02M7/53803; H02M7/53806
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
160 words
In a circuit for the production of an output voltage depending on an input direct voltage and a given desired voltage having a series connection comprising a longitudinal regulating member, an inductor and a push-pull current transformer which produces said output voltage and which is fed with said input direct voltage, said inductor and said push-pull current transformer being connected in parallel with a diode which becomes loaded at inductive cut-off voltages in the pass direction, the improvement comprising wherein said push-pull current transformer has a series connection of an impedance coil and a capacitor connected in parallel therewith and a pair of diodes symmetrically connected to said push-pull transformer at the one ends thereof and to each other and a connecting point between said impedance coil and said capacitor at the other ends thereof whereby voltages which are derived symmetrically from said push-pull transformer are conducted each through at least one of said pair of diodes to said capacitor.
Claim 2
Dependent Claim
160 words
In a circuit for the production of an output voltage depending on an input direct voltage and a given desired voltage having a series connection comprising a longitudinal regulating member, an inductor and a push-pull current transformer which produces said output voltage and which is fed with said input direct voltage, said inductor and said push-pull current transformer being connected in parallel with a diode which becomes loaded at inductive cut-off voltages in the pass direction, the improvement comprising wherein said push-pull current transformer has a series connection of an impedance coil and a capacitor connected in parallel therewith and a pair of diodes symmetrically connected to said push-pull transformer at the one ends thereof and to each other and a connecting point between said impedance coil and said capacitor at the other ends thereof whereby voltages which are derived symmetrically from said push-pull transformer are conducted each through at least one of said pair of diodes to said capacitor.
Claim 3
Dependent Claim
33 words
The improved circuit according to claim 1, wherein said push-pull transformer includes an additional push-pull winding in a fixed coupling, the ends of which are connected through said diodes to said connecting point.
Claim 4
Dependent Claim
24 words
The improved circuit according to claim 2, wherein said impedance coil is connected to a junction point between said inductor and said push-pull transformer.
Claim 5
Dependent Claim
43 words
The improved circuit according to claim 1, wherein said push-pull transformer includes switching means; and wherein said push-pull transformer includes a primary winding having taps thereon, each being connected through said diodes to said connecting point between said capacitor and said impedance coil.
Claim 6
Dependent Claim
62 words
The improved circuit according to claim 1, wherein said push-pull transformer includes a primary winding having a center tap thereon; and wherein a selective number of turns in said primary winding produces a desired relationship between the voltage at said center tap of said push-pull transformer and a given voltage superelevation which is caused during a switching off of said switching 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) | 1981-07-10 | 1982-01-09 | 1982-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-07-10 | 1986-01-09 | 1986-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-07-10 | 1990-01-09 | 1990-07-11 | $7700.00 | Window Closed / Lapsed |