US3731179A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adjustable high voltage power supply with output polarity switching
Assignee: General Electric Co
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Filing: 1972-09-22
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Granted: 1973-05-01
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Expires: 1992-09-22
Abstract
Abstract There is provided a high voltage power supply utilizing a high leakage reactance transformer connected to a voltage doubler which has a capability of reversing its output voltage. The power supply is of a type which may be used at several different input frequencies. There is provided an inexpensive low voltage switch connected to the secondary winding of the transformer and to ground. The low voltage switch is used to switch from one number of turns to another number of turns on the secondary winding depending on the frequency of the input signal.
Inventors
- 👤 L Rademaker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:38
CPC Classifications
H; H02; H02M; H02M7/00; H02M7/02; H02M7/04; H02M7/06; H02M7/10
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
82 words
A power supply comprising: a transformer having primary and secondary windings; first and second output terminals, said second output terminal adapted to be connected to ground at all times during operation of said power supply; a selection switch connected to said secondary winding and to said second output terminal at all times during operation of said power supply; polarity reversing switch means connected to said transformer secondary winding and said output terminals operable for selectively reversing the polarity of said output terminals.
Claim 2
Dependent Claim
82 words
A power supply comprising: a transformer having primary and secondary windings; first and second output terminals, said second output terminal adapted to be connected to ground at all times during operation of said power supply; a selection switch connected to said secondary winding and to said second output terminal at all times during operation of said power supply; polarity reversing switch means connected to said transformer secondary winding and said output terminals operable for selectively reversing the polarity of said output terminals.
Claim 3
Dependent Claim
25 words
A power supply as set forth in claim 1 further including: voltage doubler means electrically connected between said transformer secondary winding and said output terminals.
Claim 4
Dependent Claim
50 words
A power supply as set forth in claim 2 wherein: said voltage doubler means is of the half wave type and includes a doubling capacitor connected to said secondary winding; a pair of oppositely poled diodes connected to said doubling capacitor; and an output capacitor connected to said output terminals.
Claim 5
Dependent Claim
52 words
A power supply as set forth in claim 1 wherein said polarity reversing switch means includes first, second, third, and fourth switches; said first and third switches being alternately connected to said output for alternately reversing the polarity of the output voltage; said second and fourth switches being alternately connected to ground.
Claim 6
Dependent Claim
35 words
A power supply as set forth in claim 1 wherein said selection switch is used to select the number of turns on said secondary winding depending on the frequency of the input at said primary.
Claim 7
Dependent Claim
22 words
A power supply as set forth in claim 1: further including a half wave circuit connected to said transformer and said output.
Claim 8
Dependent Claim
67 words
A power supply comprising: an input means adapted to be connected to ground at all times during power supply operation; a voltage doubler, including an output capacitor, connected to said input means; and polarity reversing switch means having a first selectable condition enabling said output capacitor to be charged to one polarity and a second selectable condition enabling said output capacitor to be charged to another polarity.
Claim 9
Dependent Claim
67 words
A power supply comprising: an input means adapted to be connected to ground at all times during power supply operation; a voltage doubler, including an output capacitor, connected to said input means; and polarity reversing switch means having a first selectable condition enabling said output capacitor to be charged to one polarity and a second selectable condition enabling said output capacitor to be charged to another polarity.
Claim 10
Dependent Claim
124 words
A power supply comprising: a transformer having primary and secondary windings; first and second output terminals; said second output terminal being adapted to be connected to ground at all times during operating of said power supply; a frequency selection switch connected to said secondary winding and to said second output terminal at all times during operation of said power supply; polarity reversing switch means connected to said transformer secondary winding and said output terminals; said polarity reversing switch means including a first pair of switches and a second pair of switches connected to said output capacitor, said output capacitor being charged to one polarity when said first pair of switches is closed and to another polarity when said second pair of switches is closed.
Claim 11
Dependent Claim
124 words
A power supply comprising: a transformer having primary and secondary windings; first and second output terminals; said second output terminal being adapted to be connected to ground at all times during operating of said power supply; a frequency selection switch connected to said secondary winding and to said second output terminal at all times during operation of said power supply; polarity reversing switch means connected to said transformer secondary winding and said output terminals; said polarity reversing switch means including a first pair of switches and a second pair of switches connected to said output capacitor, said output capacitor being charged to one polarity when said first pair of switches is closed and to another polarity when said second pair of switches is closed.
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) | 1976-04-30 | 1976-10-30 | 1977-05-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-30 | 1980-10-30 | 1981-05-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-30 | 1984-10-30 | 1985-05-01 | $7700.00 | Window Closed / Lapsed |