US3619656A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bilateral voltage responsive switch
Assignee: Motorola Solutions Inc
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Filing: 1970-02-27
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Granted: 1971-11-09
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Expires: 1990-02-27
Abstract
Abstract An improvement is disclosed for a known bilateral voltage responsive switch comprising a pair of high resistors connected across the voltage responsive terminals thereof.
Inventors
- 👤 Douglas C Domke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 04:54
CPC Classifications
H; H02; H02M; H02M5/00; H02M5/02; H02M5/04; H02M5/22; H02M5/25; H02M5/257; H02M5/2573
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
237 words
A bilateral voltage controlled switch comprising a first and a second transistor of a first conductivity type and having main electrodes and a control electrode, a third and a fourth transistor of a second conductivity type and having main electrodes and a control electrode, a first and a second voltage terminal, a first and a second resistor, a connection from said first voltage terminal through said first resistor and the main electrodes of said third transistor to said second voltage terminal, a connection from said second voltage terminal through said second resistor and the main electrodes of said fourth transistor to said first voltage terminal, a connection from said first voltage terminal through the main electrodes of said first transistor to the control electrode of said third transistor, a connection from said second voltage terminal through the main electrodes of said second transistor to the control electrode of said fourth transistor, a connection between the control electrode of said first transistor and the junction of said first resistor and said third resistor, a connection between the control electrode of said second transistor and the junction of said second resistor and said fourth transistor, a connection between the control electrodes of said third and fourth transistors, and a pair of resistors in series between said first and second voltage terminals, said last named connection to said control electrodes being connected to the point between said pair of resistors.
Claim 2
Dependent Claim
237 words
A bilateral voltage controlled switch comprising a first and a second transistor of a first conductivity type and having main electrodes and a control electrode, a third and a fourth transistor of a second conductivity type and having main electrodes and a control electrode, a first and a second voltage terminal, a first and a second resistor, a connection from said first voltage terminal through said first resistor and the main electrodes of said third transistor to said second voltage terminal, a connection from said second voltage terminal through said second resistor and the main electrodes of said fourth transistor to said first voltage terminal, a connection from said first voltage terminal through the main electrodes of said first transistor to the control electrode of said third transistor, a connection from said second voltage terminal through the main electrodes of said second transistor to the control electrode of said fourth transistor, a connection between the control electrode of said first transistor and the junction of said first resistor and said third resistor, a connection between the control electrode of said second transistor and the junction of said second resistor and said fourth transistor, a connection between the control electrodes of said third and fourth transistors, and a pair of resistors in series between said first and second voltage terminals, said last named connection to said control electrodes being connected to the point between said pair of resistors.
Claim 3
Dependent Claim
16 words
The invention of claim 1 in which said transistors and resistors are deposited on a chip.
Claim 4
Dependent Claim
20 words
The invention of claim 2 in which a control connection is provided to the junction of said pair of transistors.
Claim 5
Dependent Claim
16 words
The invention of claim 2 in which said first and second resistors are pinch type resistors.
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) | 1974-11-08 | 1975-05-10 | 1975-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-08 | 1979-05-10 | 1979-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-08 | 1983-05-10 | 1983-11-09 | $7700.00 | Window Closed / Lapsed |