US3584288A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transformer power supply for microwave generators
Assignee: Technology Instrument Corp
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Filing: 1969-03-26
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Granted: 1971-06-08
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Expires: 1989-03-26
Abstract
Abstract Two ferroresonant transformers are provided to apply power to a magnetron, and each is adapted to resonate to provide half the power to the magnetron. The primary windings are connected in parallel across power lines, and a switch is provided to selectively connect one primary to the lines. In respective embodiments, both secondaries are adapted to operate through full-wave and half-wave rectifier means coupled to the anode of the magnetron, and in both the current drawn by the magnetron when the primary switch is closed is double that when the switch is open.
Inventors
- 👤 Helmut Boehm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:35
CPC Classifications
H; H05; H05B; H05B6/00; H05B6/64; H05B6/66; H05B6/68; H03; H03B; H03B9/00; H03B9/01; H03B9/10; H05B6/662; H05B6/687
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
158 words
A power supply for a microwave generator comprising; a pair of constant current transformers each having a primary winding and a secondary winding; means connecting said primary windings AC lines, said means including a switch in circuit with the primary winding of one transformer and operably to selectively connect it to and disconnect it from the lines, whereby both said one transformer and the other transformer are energized when said switch is closed and only said other transformer is energized when said switch is open; means in circuit with each secondary winding for developing unidirectional current pulses from said transformers; and means coupling both pulse developing means to the generator, thereby to cause current pulses from both pulse developing means to be applied to the generator when said switch is closed and to cause current pulses from the pulse developing means in circuit with said other transformer to be applied to the generator when said switch is open.
Claim 2
Dependent Claim
158 words
A power supply for a microwave generator comprising; a pair of constant current transformers each having a primary winding and a secondary winding; means connecting said primary windings AC lines, said means including a switch in circuit with the primary winding of one transformer and operably to selectively connect it to and disconnect it from the lines, whereby both said one transformer and the other transformer are energized when said switch is closed and only said other transformer is energized when said switch is open; means in circuit with each secondary winding for developing unidirectional current pulses from said transformers; and means coupling both pulse developing means to the generator, thereby to cause current pulses from both pulse developing means to be applied to the generator when said switch is closed and to cause current pulses from the pulse developing means in circuit with said other transformer to be applied to the generator when said switch is open.
Claim 3
Dependent Claim
186 words
A power supply for a microwave generator comprising: a pair of constant current transformers each having a primary winding and a secondary winding; means connecting said primary windings to AC lines, said means including a switch in circuit with the primary winding of one transformer and operable to selectively connect it to and disconnect it from the lines, whereby both said one transformer and the other transformer are energized when said switch is closed and only said other transformer is energized when said switch is open; means in circuit with each secondary winding for developing unidirectional current pulses from said transformers, said pulse developing means including half-wave rectifier means, each current pulse from each transformer when said switch is closed occurring intermediate current pulses from the other transformer; and means coupling both pulse developing means to the generator, thereby to cause current pulses from both pulse developing means to be applied to the generator when said switch is closed and to cause current pulses from the pulse developing means in circuit with said other transformer to be applied to the generator when said switch is open.
Claim 4
Dependent Claim
186 words
A power supply for a microwave generator comprising: a pair of constant current transformers each having a primary winding and a secondary winding; means connecting said primary windings to AC lines, said means including a switch in circuit with the primary winding of one transformer and operable to selectively connect it to and disconnect it from the lines, whereby both said one transformer and the other transformer are energized when said switch is closed and only said other transformer is energized when said switch is open; means in circuit with each secondary winding for developing unidirectional current pulses from said transformers, said pulse developing means including half-wave rectifier means, each current pulse from each transformer when said switch is closed occurring intermediate current pulses from the other transformer; and means coupling both pulse developing means to the generator, thereby to cause current pulses from both pulse developing means to be applied to the generator when said switch is closed and to cause current pulses from the pulse developing means in circuit with said other transformer to be applied to the generator when said switch is open.
Claim 5
Dependent Claim
58 words
The combination of claim 2, wherein said half-wave rectifier means includes respective rectifiers each having a capacitor and a diode in series with a respective secondary winding, said diodes being directly connected in the same direction; and a respective connection from the junction of each series-connected capacitor and diode, said connections being adapted for connection across the generator.
Claim 6
Dependent Claim
209 words
A power supply for a microwave generator comprising: a pair of constant current transformers each having a primary winding and a secondary winding; means connecting said primary windings to AC lines, said means including a switch in circuit with the primary winding of one transformer and operable to selectively connect it to and disconnect it from the lines, whereby both said one transformer and the other transformer are energized when said switch is closed and only said other transformer is energized when said switch is open; means in circuit with each secondary winding for developing unidirectional current pulses from said transformers, including full-wave rectifier means, the current pulses applied to the generator from both transformers when said switch is closed being coincident; said full-wave rectifier means including a pair of bridges each having a pair of capacitor legs, the remaining legs of each bridge being two diode legs that form common legs for the bridges for both pair of capacitor legs; respective connections from each side of said isolation diode to one end of each secondary winding, the other ends of said secondary windings being connected respectively to the functions of the capacitor legs; and respective connections from the ends of said diode legs for connection across the generator.
Claim 7
Dependent Claim
209 words
A power supply for a microwave generator comprising: a pair of constant current transformers each having a primary winding and a secondary winding; means connecting said primary windings to AC lines, said means including a switch in circuit with the primary winding of one transformer and operable to selectively connect it to and disconnect it from the lines, whereby both said one transformer and the other transformer are energized when said switch is closed and only said other transformer is energized when said switch is open; means in circuit with each secondary winding for developing unidirectional current pulses from said transformers, including full-wave rectifier means, the current pulses applied to the generator from both transformers when said switch is closed being coincident; said full-wave rectifier means including a pair of bridges each having a pair of capacitor legs, the remaining legs of each bridge being two diode legs that form common legs for the bridges for both pair of capacitor legs; respective connections from each side of said isolation diode to one end of each secondary winding, the other ends of said secondary windings being connected respectively to the functions of the capacitor legs; and respective connections from the ends of said diode legs for connection across the generator.
Claim 8
Dependent Claim
197 words
A power supply for a microwave generator comprising: a pair of constant current transformers each having a primary winding and a secondary winding; means connecting said primary windings to AC lines, said means including a switch in circuit with the primary winding of one transformer and operable to selectively connect it to and disconnect it from the lines, whereby both said one transformer and the other transformer are energized when said switch is closed and only said other transformer is energized when said switch is open; means in circuit with each secondary winding for developing unidirectional current pulses from said transformers, including a pair of half-wave rectifiers each having input terminals connected to the ends of a respective secondary winding, respective input terminals of said rectifiers being connected together; and means coupling both pulse developing means to the generator, thereby to cause current pulses from both pulse developing means to be applied to the generator when said switch is closed and to cause current pulses from the pulse developing means in circuit with said other transformer to be applied to the generator when said switch is open, including output connections from both rectifiers connected across the generator.
Claim 9
Dependent Claim
197 words
A power supply for a microwave generator comprising: a pair of constant current transformers each having a primary winding and a secondary winding; means connecting said primary windings to AC lines, said means including a switch in circuit with the primary winding of one transformer and operable to selectively connect it to and disconnect it from the lines, whereby both said one transformer and the other transformer are energized when said switch is closed and only said other transformer is energized when said switch is open; means in circuit with each secondary winding for developing unidirectional current pulses from said transformers, including a pair of half-wave rectifiers each having input terminals connected to the ends of a respective secondary winding, respective input terminals of said rectifiers being connected together; and means coupling both pulse developing means to the generator, thereby to cause current pulses from both pulse developing means to be applied to the generator when said switch is closed and to cause current pulses from the pulse developing means in circuit with said other transformer to be applied to the generator when said switch is open, including output connections from both rectifiers connected across the generator.
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) | 1974-06-07 | 1974-12-07 | 1975-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-07 | 1978-12-07 | 1979-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-07 | 1982-12-07 | 1983-06-08 | $7700.00 | Window Closed / Lapsed |