Electrical transmission or interconnection systems – Plural load circuit systems – Selectively connected or controlled load circuits
Patent
1990-07-27
1994-02-22
Gaffin, Jeffrey A.
Electrical transmission or interconnection systems
Plural load circuit systems
Selectively connected or controlled load circuits
307 101, 307 40, H02J 100
Patent
active
052890430
ABSTRACT:
There is described a semiconductor switch device having two semiconductor components, the first component receiving drive signals from the second. The first component contains either a single power bipolar switch element for single ended control of the energisation of a load or a bridge of such elements enabling energisation of a load with different polarities. The switch elements, which may be transistors or darlington multiple transistors, have voltage dropping elements connected in the leads to their control bases, so that the drive signals from the second component can be produced by low impedance connection to one or the other supply conductor, thereby keeping the power dissipation of the second component to a low value. The voltage dropping elements may be a series resistor or a constant current circuit. The first component may have a temperature sensitive member, such as a diode, for diverting current from the control base of the or each switching element to terminate its conduction if the temperature of the component becomes too high. The switch device is used in a switching system for a motor vehicle, for example, where central control is required of a plurality of loads at various locations. A central controller transmits coded control signals to local controllers which direct the control signals to the correct switch devices. Status signals representing the functional states of the loads and the outputs of local sensors are sent to the central controller to produce there a corresponding display.
REFERENCES:
patent: 3397326 (1968-08-01), Gallagher et al.
patent: 3758831 (1973-09-01), Clark
patent: 3769572 (1973-10-01), Doubt
patent: 3959713 (1976-05-01), Davis et al.
patent: 4000506 (1976-12-01), Hirai et al.
patent: 4160986 (1979-07-01), Johnson
patent: 4205332 (1980-05-01), Conti et al.
patent: 4575673 (1986-03-01), Tedeschi et al.
patent: 4578591 (1986-03-01), Floyd et al.
patent: 4639609 (1987-01-01), Floyd et al.
patent: 4677308 (1987-06-01), Wroblewski et al.
patent: 4698655 (1987-10-01), Schultz
patent: 4799126 (1989-01-01), Kruse
patent: 4977476 (1990-12-01), Marshall et al.
Sedra, Adel S. and Kenneth C. Smith, Microelectronic Circuits, 1982, pp. 359, 390-392.
Cavanagh Philip J.
Colman Derek
Dale David P.
Marshall Andrew
Donaldson Richard L.
Gaffin Jeffrey A.
Hiller William E.
Texas Instruments Incorporated
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