US3815009A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Power inverter circuit
Assignee: Pioneer Magnetics Inc
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Filing: 1973-06-11
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Granted: 1974-06-04
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Expires: 1993-06-11
Abstract
Abstract A high-frequency power inverter circuit is provided which responds to a first direct-current voltage to provide an alternating-current voltage which may be rectified to provide a second direct-current voltage of different value than the first direct-current voltage. The first direct-current voltage is obtained by rectifying the alternating-current voltage from the usual alternating-current mains. The high-frequency power inverter circuit of the invention is constructed to operate on the European standard 230-240 volt alternating-current voltages, and to be capable of being adapted by a simple connection to operate on the United States standard of 115-117 volts alternating-current voltage. This is achieved by providing two sections in the power inverter circuit which are effectively connected in series for the higher voltage input, and in shunt for the lower voltage input.
Inventors
- 👤 J Berger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:31
CPC Classifications
H; H02; H02M; H02M7/00; H02M7/42; H02M7/44; H02M7/48; H02M7/53; H02M7/537
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
231 words
A power inverter system, or the like, including: a pair of input terminals to be selectively connected to a high-voltage alternating current source and to a low-voltage alternating current source; a rectifier circuit connected to said input terminals; a first capacitor connected to one side of said rectifier circuit; a second capacitor connected to the other side of said rectifier circuit; a first switching circuit connected to said first capacitor; a second switching circuit connected to said second capacitor; a transformer having a first primary winding connected in series with said first capacitor and said first switching circuit, having a second primary winding connected in series with said second switching circuit and said second capacitor, and having at least one secondary winding; rectifier circuit means connected across said secondary winding and having a pair of output terminals across which a direct current output voltage appears; control circuitry connected to the first and second switching circuits for actuating the switching circuits in sequence to cause current to flow alternately in the first and second parimary windings of the transformer; a first connection for interconnecting said first capacitor and said second capacitor in series across said rectifier circuit for operation with said high-voltage alternating current source; and a second connection for interconnecting said first capacitor and said second capacitor in shunt across said rectifier circuit for operation with the lowvoltage alternating current source.
Claim 2
Dependent Claim
231 words
A power inverter system, or the like, including: a pair of input terminals to be selectively connected to a high-voltage alternating current source and to a low-voltage alternating current source; a rectifier circuit connected to said input terminals; a first capacitor connected to one side of said rectifier circuit; a second capacitor connected to the other side of said rectifier circuit; a first switching circuit connected to said first capacitor; a second switching circuit connected to said second capacitor; a transformer having a first primary winding connected in series with said first capacitor and said first switching circuit, having a second primary winding connected in series with said second switching circuit and said second capacitor, and having at least one secondary winding; rectifier circuit means connected across said secondary winding and having a pair of output terminals across which a direct current output voltage appears; control circuitry connected to the first and second switching circuits for actuating the switching circuits in sequence to cause current to flow alternately in the first and second parimary windings of the transformer; a first connection for interconnecting said first capacitor and said second capacitor in series across said rectifier circuit for operation with said high-voltage alternating current source; and a second connection for interconnecting said first capacitor and said second capacitor in shunt across said rectifier circuit for operation with the lowvoltage alternating current source.
Claim 3
Dependent Claim
23 words
The power inverter system defined in claim 1, in which said first and second switching circuits include transistors for performing their switching functions.
Claim 4
Dependent Claim
41 words
The power inverter system defined in claim 2, and which includes a further capacitor interposed in the series circuit of said second switching circuit, and a resistor shunting said further capacitor to provide a self-balancing control network for the switching circuits.
Claim 5
Dependent Claim
70 words
The power inverter system defined in claim 3, and which includes a second transformer having first and second primary windings; a third switching circuit; a fourth switching circuit; circuit means connecting said third switching circuit and said first primary winding of said second transformer across said first capacitor; and further circuit means connecting said fourth switching circuit and said second primary winding of said second transformer across said second capacitor.
Claim 6
Dependent Claim
29 words
The power inverter system defined in claim 4, and which includes a balancing capacitor connected in series with said second switching circuit, and a resistor shunting said balancing capacitor.
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) | 1977-06-03 | 1977-12-03 | 1978-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-03 | 1981-12-03 | 1982-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-03 | 1985-12-03 | 1986-06-04 | $7700.00 | Window Closed / Lapsed |