US3564291A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electronic relay arrangement
Assignee: US Philips Corp
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Filing: 1967-11-20
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Granted: 1971-02-16
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Expires: 1987-11-20
Abstract
Abstract An electronic relay comprises a first PNPN device in series with a line to be controlled, and a second PNPN device having one end electrode connected to a point of constant potential. The other end electrode of the second device is connected to the inner layer of similar conductivity of the first device. A control circuit is connected to an inner layer of the second device.
Inventors
- 👤 Einar Andreas Aagaard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:48
CPC Classifications
H; H03; H03K; H03K17/00; H03K17/51; H03K17/56; H03K17/72; H10; H10D; H10D84/00; H10D84/60
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
147 words
An electronic relay comprising a first four-layer transistor device, an input circuit connected to one outer layer of said first device and an output circuit connected to the other outer layer of said first device, said input and output circuits having a selected potential range, means for forward biasing said first device including a source of leakage current connected to said inner layer, a second four-layer device having one outer layer connected to a point of constant potential having a potential outside of said selected potential range, means for controlling the conduction of said first device by said second device withdrawing said leakage current from said first device comprising means interconnecting the other outer layer of said second device and the inner layer of said first device of the same conductivity, and a direct current control circuit means connected to an inner layer of said second device.
Claim 2
Dependent Claim
147 words
An electronic relay comprising a first four-layer transistor device, an input circuit connected to one outer layer of said first device and an output circuit connected to the other outer layer of said first device, said input and output circuits having a selected potential range, means for forward biasing said first device including a source of leakage current connected to said inner layer, a second four-layer device having one outer layer connected to a point of constant potential having a potential outside of said selected potential range, means for controlling the conduction of said first device by said second device withdrawing said leakage current from said first device comprising means interconnecting the other outer layer of said second device and the inner layer of said first device of the same conductivity, and a direct current control circuit means connected to an inner layer of said second device.
Claim 3
Dependent Claim
27 words
A relay as claimed in claim 1 further comprising a first resistor coupled between said source of constant potential and said inner layer of said second device.
Claim 4
Dependent Claim
32 words
A relay as claimed in claim 2 further comprising a series circuit comprising a Zener diode and second resistor coupled between said control circuit and said inner layer of said second device.
Claim 5
Dependent Claim
65 words
A relay as claimed in claim 1 wherein said control circuit comprises a three-layer transistor having outer layers coupled to said outer layer of said second device which is coupled to said point of constant potential and said inner layer of said second device respectively, said outer layers of said three-layer device being of opposite conductivity type from said inner layer of said second device.
Claim 6
Dependent Claim
23 words
A relay as claimed in claim 4 further comprising a source of leakage current coupled to said inner layer of said second device.
Claim 7
Dependent Claim
32 words
A relay as claimed in claim 4 further comprising a series circuit including a Zener diode and a resistor coupled between the inner layer of said three-layer transistor and said control circuit.
Claim 8
Dependent Claim
26 words
A relay as claimed in claim 4 further comprising a resistor coupled between said point of constant potential and the inner layer of said three-layer transistor.
Claim 9
Dependent Claim
41 words
A relay as claimed in claim 2 further comprising a three-layer transistor device having outer layers coupled to said point of constant potential and an output terminal respectively, and an inner layer coupled to said inner layer of said second device.
Claim 10
Dependent Claim
18 words
A relay as claimed in claim 8 further comprising a leakage current source coupled to said output terminal.
Claim 11
Dependent Claim
17 words
A relay as claimed in claim 1 wherein said leakage current source comprises a field effect transistor.
Claim 12
Dependent Claim
46 words
A relay as claimed in claim 1 wherein said leakage current source comprises a three-layer transistor having outer layers of the same conductivity type as the inner layer of said first device and means for controlling the current in the inner layer of said three-layer transistor.
Claim 13
Dependent Claim
17 words
A relay as claimed in claim 11 wherein said current control means comprises a field effect transistor.
Claim 14
Dependent Claim
40 words
A relay as claimed in claim 1 further comprising a third four-layer transistor device having outer layers coupled in parallel opposition with respect to said first device and an inner layer coupled to the inner layer of said first device.
References Cited (Backward Citations)
US3189783A
Cited
US3299334A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-02-15 | 1974-08-17 | 1975-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-15 | 1978-08-17 | 1979-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-15 | 1982-08-17 | 1983-02-16 | $7700.00 | Window Closed / Lapsed |