Fishing – trapping – and vermin destroying
Patent
1988-03-04
1990-08-14
Hearn, Brian E.
Fishing, trapping, and vermin destroying
437 39, 437912, 437 29, 357 22, H01L 21265
Patent
active
049487469
ABSTRACT:
A MESFET device is provided wherein the top Schottky gate is electrically isolated from the bottom gate. Methods as described for forming channels self aligned to Schottky top gates and complementary junction field effect transistors. A method is also described for adjusting or trimming the voltage to current characteristics of a MESFET by applying current pulses to the gate and through the channel to create conductive regions between the top and bottom gate. Dual segment gates or sources or drains may be provided to reduce the trimming current and appropriate steering circuity also provided. This technique may be used to adjust individual MESFETs, as well as current followers, differential amplifiers and other circuits which would be designed to include MESFETs.
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Dang Trung
Harris Corporation
Hearn Brian E.
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