Method for making a light-activated line-operable zero-crossing

Details Method for making a light-activated line-operable zero-crossing Method for making a light-activated line-operable zero-crossing

1981-07-31

1983-08-02

Clawson, Jr., Joseph E.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

357 35, 357 23, 357 30, 357 43, 307252A, 307252B, 307252UA, 307311, H01L 29747

Patent

active

043969321

ABSTRACT:
A monolithic light-activated line-operable zero-crossing switch and method of making the same. The device comprises anti-parallel thyristors, each of whose gates is shunted by a field effect transistor. Each device may also be shunted by a resistor to reduce the overall sensitivity. The method of making the device contemplates surrounding the field effect transistor gate electrode and an internal shunt electrode by the primary metallization which forms the contact to the two main terminals of the device.

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J. Parisi, "Bipolar Trans. Proc. Using Pl.-Ap. Mask for B and E Diff.," IBM Tech. Discl. Bull., vol. 16, #5, Oct. 1973, p. 1618.
G. Feth et al., "Planar Triac Structures, "IBM Tech. Discl. Bull., vol. 19, #6, Nov. 1976, pp. 2297-2301.

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