Optically actuated bidirectional semiconductor switch

Details Optically actuated bidirectional semiconductor switch Optically actuated bidirectional semiconductor switch

1977-10-27

1979-01-30

Cooper, William C.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307117, 307311, 307315, H03K 1778

Patent

active

041374282

ABSTRACT:
An optically controlled bidirectional (bilateral) electrical switch is formed by a pair of photo-Darlington devices connected in series opposing (back-to-back) relationship between the two controlled terminals of the switch. Each of these photo-Darlington devices is shunted by a separate unidirectional diode element, such as a PN junction diode, arranged to conduct current only in the opposite direction from that of current flow through the corresponding shunted photo-Darlington device in its "on" condition. Four embodiments are shown.

REFERENCES:
motorola, "MOC 3000-3003," Data Sheet, Oct. 1975.
Western Electric, "2B Opto-Isolator," Data Sheet, Mar. 1976.
C. Bussolati, et al., "An Optoelectronic Switch etc.," IEEE Trans. on I and M, Jun. 1977, pp. 105-109.
J. Biard, et al., "Optoelectronics etc.," Proc. IEEE, Dec. 1964, pp. 1529-1536.

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