US3343061A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transistor circuit for developing a high voltage and including short-circuit protection means
Assignee: US Philips Corp
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Filing: 1964-10-12
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Granted: 1967-09-19
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Expires: 1984-10-12
Abstract
No abstract record available.
Inventors
- 👤 Hettersc Wilhelmus T Hendrikus
- 👤 Reichgelt Johannes Joseph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:36
CPC Classifications
H; H02; H02M; H02M7/00; H02M7/42; H02M7/44; H02M7/48; H02M7/53; H02M7/537; H02M7/539; H02H; H02H7/00; H02H7/10; H02H7/12; H02H7/1213; H02M3/00; H02M3/22; H02M3/24; H02M3/28; H02M3/325; H02M3/335; H02M3/33507; H02M3/338; H03; H03K; H03K17/00; H03K17/08; H03K17/082; H03K17/0826; H03K4/00; H03K4/06; H03K4/08; H03K4/085; H03K4/48; H03K4/60; H03K4/62; H03K4/64; H04; H04N; H04N3/00; H04N3/10; H04N3/16; H04N3/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
144 words
A TRANSISTOR CIRCUIT FOR PRODUCING A HIGH VOLTAGE OF THE TYPE COMPRISING A DRIVER TRANSISTOR, AN OUTPUT TRANSISTOR HAVING AN OUTPUT CIRCUIT WHICH INCLUDES A CAPACITIVEINDUCTIVE LOAD, A SUPPLY VOLTAGE SOURCE FOR FEEDING THE DRIVER AND OUTPUT TRANSISTORS, MEANS FOR SUPPLYING A SUBSTANTIALLY PULSATORY SIGNAL TO AN INPUT ELECTRODE OF THE DRIVER TRANSISTOR, SAID SIGNAL HAVING A POLARITY TO CUT-OFF THE DRIVER TRANSISTOR FOR THE GREATER PART OF A CYCLE OF THE INPUT SIGNAL AND TO RELEASE IT DURING THE REMAINING PART OF A CYCLE, MEANS FOR COUPLING SAID DRIVER AND OUTPUT TRANSISTORS WHEREBY THE OUTPUT TRANSISTOR IS CONDUCTING WHEN THE DRIVER IS CUT-OFF AND CONVERSELY, A TRANSFORMER CONNECTED IN THE OUTPUT CIRCUIT OF THE OUTPUT TRANSISTOR AND HAVING A HIGH VOLTAGE WINDING FOR STEPPING UP THE PULSATORY VOLTAGE SET UP ACROSS THE CAPACITIVE-INDUCTIVE LOADING DURING THE PERIOD WHEN THE OUTPUT TRANSISTOR IS CUT-
Claim 2
Dependent Claim
144 words
A TRANSISTOR CIRCUIT FOR PRODUCING A HIGH VOLTAGE OF THE TYPE COMPRISING A DRIVER TRANSISTOR, AN OUTPUT TRANSISTOR HAVING AN OUTPUT CIRCUIT WHICH INCLUDES A CAPACITIVEINDUCTIVE LOAD, A SUPPLY VOLTAGE SOURCE FOR FEEDING THE DRIVER AND OUTPUT TRANSISTORS, MEANS FOR SUPPLYING A SUBSTANTIALLY PULSATORY SIGNAL TO AN INPUT ELECTRODE OF THE DRIVER TRANSISTOR, SAID SIGNAL HAVING A POLARITY TO CUT-OFF THE DRIVER TRANSISTOR FOR THE GREATER PART OF A CYCLE OF THE INPUT SIGNAL AND TO RELEASE IT DURING THE REMAINING PART OF A CYCLE, MEANS FOR COUPLING SAID DRIVER AND OUTPUT TRANSISTORS WHEREBY THE OUTPUT TRANSISTOR IS CONDUCTING WHEN THE DRIVER IS CUT-OFF AND CONVERSELY, A TRANSFORMER CONNECTED IN THE OUTPUT CIRCUIT OF THE OUTPUT TRANSISTOR AND HAVING A HIGH VOLTAGE WINDING FOR STEPPING UP THE PULSATORY VOLTAGE SET UP ACROSS THE CAPACITIVE-INDUCTIVE LOADING DURING THE PERIOD WHEN THE OUTPUT TRANSISTOR IS CUT-
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) | 1970-09-18 | 1971-03-20 | 1971-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-18 | 1975-03-20 | 1975-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-18 | 1979-03-20 | 1979-09-19 | $7700.00 | Window Closed / Lapsed |