US3784840A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Solid state remote power switch
Assignee: Kyocera Corp
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Filing: 1972-12-21
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Granted: 1974-01-08
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Expires: 1992-12-21
Abstract
Abstract A solid state remote power switch is provided, e.g., in an amplifier system having a remotely located phonograph turntable or tape deck. Turning on the phonograph turntable or tape deck ensures that the amplifier is energized at the same time. When the phonograph turntable or tape deck turns off it simultaneously removes power from the amplifier. The solid state remote power switch includes a semiconductor bidirectional current passing device of the triac type coupled in series between the AC power source and the energization circuitry of the amplifier unit. The phonograph turntable or tape deck is adapted to be connected to the amplifier unit and, when turned on, provides the control signal which activates or turns on the triac device, thereby simultaneously providing power to the amplifier unit.
Inventors
- 👤 R Kirkpatrick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 17:59
CPC Classifications
H; H03; H03K; H03K17/00; H03K17/51; H03K17/56; H03K17/72; H03K17/725
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
152 words
In a system having first and second electrically operated devices, an improved control circuit for applying electrical power from a source thereof to the first device only when the second device is energized comprising: a. a semiconductor bidirectional current passing device of the triac type having two current passing power electrodes and a current passing control electrode that permits current to flow between the power electrodes when current is flowing through the control electrode; b. means for connecting said two power electrodes in a current passing path coupling said source of electRical power to said first device; and c. means for connecting said control electrode in a current passing path coupling said source of electrical power to said second device so that, when said second device is operative and current flows therethrough and through said control electrode, current is permitted to flow between said power electrodes thereby to energize said first device.
Claim 2
Dependent Claim
152 words
In a system having first and second electrically operated devices, an improved control circuit for applying electrical power from a source thereof to the first device only when the second device is energized comprising: a. a semiconductor bidirectional current passing device of the triac type having two current passing power electrodes and a current passing control electrode that permits current to flow between the power electrodes when current is flowing through the control electrode; b. means for connecting said two power electrodes in a current passing path coupling said source of electRical power to said first device; and c. means for connecting said control electrode in a current passing path coupling said source of electrical power to said second device so that, when said second device is operative and current flows therethrough and through said control electrode, current is permitted to flow between said power electrodes thereby to energize said first device.
Claim 3
Dependent Claim
42 words
A system according to claim 1 including switch means for completing an electrical path around said second device to provide for current flow through said control electrode to energize said first device independently of the flow of current through said second device.
Claim 4
Dependent Claim
42 words
A system according to claim 1 including switch means for coupling said control electrode to one of said power electrodes for passing current through said control electrode to energize said first device independently of the passage of current through said second device.
Claim 5
Dependent Claim
33 words
A system according to claim 1 in which the means (c) includes an electrical socket on said first device adapted to receive a mating electrical plug for supplying power to said second device.
Claim 6
Dependent Claim
27 words
A system according to claim 4 in which said first device comprises an amplifier and said second device comprises one of a phonograph turntable and tape deck.
Claim 7
Independent Claim
159 words
A system useful for applying electrical power from a source thereof to a first electrically operated device only upon the energization of a second electrically operated device, comprising: a. a semiconductor bidirectional current passing device of the triac type having two current passing power electrodes and a current passing control electrode that permits current to flow between the power electrodes when current is flowing through the control electrode; b. means for connecting said two power electrodes in a current passing path that couples a source of electrical power to a first electrical socket, said first electrical socket being adapted to receive a first mating electrical plug connected to said first device; and c. means for connecting said control electrode in a current passing path that couples said source of electrical power to a second electrical socket, said second electrical socket being adapted to receive a second mating electrical plug connected to said second device to supply electrical power thereto.
Claim 8
Independent Claim
159 words
A system useful for applying electrical power from a source thereof to a first electrically operated device only upon the energization of a second electrically operated device, comprising: a. a semiconductor bidirectional current passing device of the triac type having two current passing power electrodes and a current passing control electrode that permits current to flow between the power electrodes when current is flowing through the control electrode; b. means for connecting said two power electrodes in a current passing path that couples a source of electrical power to a first electrical socket, said first electrical socket being adapted to receive a first mating electrical plug connected to said first device; and c. means for connecting said control electrode in a current passing path that couples said source of electrical power to a second electrical socket, said second electrical socket being adapted to receive a second mating electrical plug connected to said second device to supply electrical power thereto.
References Cited (Backward Citations)
US3421063A
Cited
US3544720A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-01-07 | 1977-07-09 | 1978-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-07 | 1981-07-09 | 1982-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-07 | 1985-07-09 | 1986-01-08 | $7700.00 | Window Closed / Lapsed |