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Patent US3681678A successfully refreshed from Google Patents.
US3681678A
Expired / Lapsed
US
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Controlled power supply with two thyristors
Assignee: Sola Basic Industries Inc
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Filing: 1971-02-01
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Granted: 1972-08-01
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Expires: 1991-02-01
Abstract
Abstract A regulated d.c. power supply using two thyristors and a high leakage reactance transformer.
Inventors
- 👤 John C Holmquest
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:22
CPC Classifications
H; H02; H02M; H02M7/00; H02M7/02; H02M7/04; H02M7/12; H02M7/145; H02M7/155; H02M7/1555; H02M7/1557
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
146 words
A d.c. regulated power supply including a high reactance transformer having a core, primary winding means on said core, at least a pair of secondary winding means symmetrically arranged on said core relative to said primary winding means and on either side thereof so that the effect of loading of a secondary winding means on one side affects the flux density of the other secondary winding means, a first of said secondary winding means being connected to a thyristor having an output lead connectable to a load, a second thyristor connected to a second of said secondary means and having its output connected to said output lead, a connection betweEn said secondary means and connected thereto and having a connection to said load, and control means responsive to output condition to control firing angles of said thyristors so that conduction angles will include those over 180*.
Claim 2
Dependent Claim
146 words
A d.c. regulated power supply including a high reactance transformer having a core, primary winding means on said core, at least a pair of secondary winding means symmetrically arranged on said core relative to said primary winding means and on either side thereof so that the effect of loading of a secondary winding means on one side affects the flux density of the other secondary winding means, a first of said secondary winding means being connected to a thyristor having an output lead connectable to a load, a second thyristor connected to a second of said secondary means and having its output connected to said output lead, a connection betweEn said secondary means and connected thereto and having a connection to said load, and control means responsive to output condition to control firing angles of said thyristors so that conduction angles will include those over 180*.
Claim 3
Dependent Claim
22 words
A power supply as claimed in claim 1 wherein said primary means is seperated from said secondary means by magnetic shunt means.
Claim 4
Dependent Claim
31 words
A power supply as claimed in claim 1 having control means for said thyristors which phase shifts the conduction angle thereof in accordance with the input signal to said control means.
Claim 5
Dependent Claim
17 words
A power supply as in claim 2 including a capacitor and resistor connected across the output leads.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-08-01 | 1976-01-31 | 1976-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-01 | 1980-01-31 | 1980-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-01 | 1984-01-31 | 1984-08-01 | $7700.00 | Window Closed / Lapsed |