US3569855A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Power supply for heating magnetron
Assignee: Toshiba Corp
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Filing: 1969-01-03
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Granted: 1971-03-09
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Expires: 1989-01-03
Abstract
Abstract A high frequency magnetron apparatus for use in heating ovens with an improved power source device which comprises a transformer for stepping up a source voltage, a magnetron disposed on the secondary side of the transformer, and a circuit positioned on said secondary side, consisting of a condenser and diode and arranged in such a manner that when there is supplied a voltage in one direction from the poser source provided on the secondary side of the transformer, the condenser is charged and that when there is supplied a voltage therefrom in the opposite direction, the secondary voltage of the transformer is combined with the charge voltage of the condenser to be impressed on the magnetron.
Inventors
- 👤 Tomimitsu Noda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:29
CPC Classifications
H; H03; H03B; H03B9/00; H03B9/01; H03B9/10
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
113 words
A high frequency magnetron apparatus for use in heating ovens with an improved power source device which comprises an AC voltage-generating source, a transformer for stepping up said source voltage to a prescribed level, a diode whose cathode is connected to one end of the secondary coil of the transformer, a condenser connected to the other end of the secondary coil of the transformer and in series with the diode, a magnetron whose anode is connected to an intermediate tap on the secondary coil of the transformer and whose cathode is connected to an intermediate point on a line connecting the condenser and diode, and means to heat the cathode of the magnetron.
Claim 2
Dependent Claim
113 words
A high frequency magnetron apparatus for use in heating ovens with an improved power source device which comprises an AC voltage-generating source, a transformer for stepping up said source voltage to a prescribed level, a diode whose cathode is connected to one end of the secondary coil of the transformer, a condenser connected to the other end of the secondary coil of the transformer and in series with the diode, a magnetron whose anode is connected to an intermediate tap on the secondary coil of the transformer and whose cathode is connected to an intermediate point on a line connecting the condenser and diode, and means to heat the cathode of the magnetron.
Claim 3
Dependent Claim
168 words
A high frequency magnetron apparatus for use in heating ovens with an improved source voltage which comprises an AC voltage-generating source, a transformer for stepping up said source voltage to a prescribed level provided with a secondary coil member divided into a first secondary coil impressed with a voltage in the same direction as in a primary coil and a second secondary coil impressed with a voltage in the opposite direction to that in which the primary coil is impressed with a voltage, a condenser commonly connected to one end of each of the first and second secondary coils of the transformer, a diode having its cathode connected to the other end of the second secondary coil of the transformer and serially connected to the condenser, and a magnetron whose anode is connected to the other end of the first secondary coil of the transformer and whose cathode is connected to an intermediate point between the condenser and diode, and means to heat the cathode of the magnetron.
Claim 4
Dependent Claim
168 words
A high frequency magnetron apparatus for use in heating ovens with an improved source voltage which comprises an AC voltage-generating source, a transformer for stepping up said source voltage to a prescribed level provided with a secondary coil member divided into a first secondary coil impressed with a voltage in the same direction as in a primary coil and a second secondary coil impressed with a voltage in the opposite direction to that in which the primary coil is impressed with a voltage, a condenser commonly connected to one end of each of the first and second secondary coils of the transformer, a diode having its cathode connected to the other end of the second secondary coil of the transformer and serially connected to the condenser, and a magnetron whose anode is connected to the other end of the first secondary coil of the transformer and whose cathode is connected to an intermediate point between the condenser and diode, and means to heat the cathode of the magnetron.
Claim 5
Dependent Claim
182 words
A high frequency magnetron apparatus for use in heating ovens with an improved power source device which comprises an AC generating source, first and second transformers for stepping up the source voltage to a prescribed level, the secondary coil of the first transformer respectively being so wound as to cause a voltage to be impressed in the same direction as in a primary coil and the secondary coil of the second transformer being so wound as to cause a voltage to be impressed in the opposite direction to that in which the primary coil is impressed with a voltage, a condenser connected to one end of the secondary coil of the first and second transformers respectively, a diode having its cathode connected to the other end of the secondary coil of the second transformer and serially connected to the condenser, and a magnetron whose anode is connected to the other end of the secondary coil of the first transformer and whose cathode is connected to an intermediate point between the condenser and diode, and means to heat the cathode of the magnetron.
Claim 6
Dependent Claim
182 words
A high frequency magnetron apparatus for use in heating ovens with an improved power source device which comprises an AC generating source, first and second transformers for stepping up the source voltage to a prescribed level, the secondary coil of the first transformer respectively being so wound as to cause a voltage to be impressed in the same direction as in a primary coil and the secondary coil of the second transformer being so wound as to cause a voltage to be impressed in the opposite direction to that in which the primary coil is impressed with a voltage, a condenser connected to one end of the secondary coil of the first and second transformers respectively, a diode having its cathode connected to the other end of the secondary coil of the second transformer and serially connected to the condenser, and a magnetron whose anode is connected to the other end of the secondary coil of the first transformer and whose cathode is connected to an intermediate point between the condenser and diode, and means to heat the cathode of the magnetron.
Claim 7
Dependent Claim
163 words
A high frequency magnetron apparatus for use in heating ovens with an improved power source device which comprises an AC generating source, a transformer for stepping up the source voltage to a prescribed level, a first diode Having its cathode connected to one end of the secondary coil of the transformer, a first condenser connected to the other end of the secondary coil of the transformer in series with the first diode, a second diode having its anode connected to one end of the secondary coil of the transformer to which is connected the cathode of the first diode, a second condenser connected to the intermediate tap of the secondary coil of the transformer in series with the second diode, and a magnetron whose anode is connected to an intermediate point between the second diode and second condenser and whose cathode is connected to an intermediate point between the first diode and first condenser, and means to heat the cathode of the magnetron.
Claim 8
Dependent Claim
163 words
A high frequency magnetron apparatus for use in heating ovens with an improved power source device which comprises an AC generating source, a transformer for stepping up the source voltage to a prescribed level, a first diode Having its cathode connected to one end of the secondary coil of the transformer, a first condenser connected to the other end of the secondary coil of the transformer in series with the first diode, a second diode having its anode connected to one end of the secondary coil of the transformer to which is connected the cathode of the first diode, a second condenser connected to the intermediate tap of the secondary coil of the transformer in series with the second diode, and a magnetron whose anode is connected to an intermediate point between the second diode and second condenser and whose cathode is connected to an intermediate point between the first diode and first condenser, and means to heat the cathode of the magnetron.
Claim 9
Dependent Claim
203 words
A high frequency magnetron apparatus for use in heating ovens with an improved power source device which comprises an AC voltage-generating source, a transformer for stepping up the source voltage to a prescribed level, a first condenser connected to one end of the secondary coil of the transformer, a first diode having its anode connected to the other end of the secondary coil of the transformer and serially connected to the first condenser, a second diode having its anode connected to the cathode of the first diode, a second condenser connected between the cathode of the second diode and that end of the secondary coil of the transformer to which is connected the anode of the first diode, a third diode having its anode connected to the cathode of the second diode, a third condenser interposed between the cathode of the third diode and an intermediate point on a line connecting the second diode and first condenser, and a magnetron whose anode is connected to the cathode of the third diode and whose cathode is connected to that end of the secondary coil of the transformer which contacts the anode of the first diode, and means to heat the cathode of the magnetron.
Claim 10
Dependent Claim
203 words
A high frequency magnetron apparatus for use in heating ovens with an improved power source device which comprises an AC voltage-generating source, a transformer for stepping up the source voltage to a prescribed level, a first condenser connected to one end of the secondary coil of the transformer, a first diode having its anode connected to the other end of the secondary coil of the transformer and serially connected to the first condenser, a second diode having its anode connected to the cathode of the first diode, a second condenser connected between the cathode of the second diode and that end of the secondary coil of the transformer to which is connected the anode of the first diode, a third diode having its anode connected to the cathode of the second diode, a third condenser interposed between the cathode of the third diode and an intermediate point on a line connecting the second diode and first condenser, and a magnetron whose anode is connected to the cathode of the third diode and whose cathode is connected to that end of the secondary coil of the transformer which contacts the anode of the first diode, and means to heat the cathode of the magnetron.
References Cited (Backward Citations)
US2979671A
Cited
US3396342A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-03-08 | 1974-09-07 | 1975-03-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-08 | 1978-09-07 | 1979-03-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-08 | 1982-09-07 | 1983-03-09 | $7700.00 | Window Closed / Lapsed |