High output drive FET buffer for providing high initial current

Details High output drive FET buffer for providing high initial current High output drive FET buffer for providing high initial current

1988-12-20

1990-09-18

Hudspeth, David

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307443, 307450, 307475, H03K 19017

Patent

active

049580892

ABSTRACT:
An output buffer provides high current at an output for only a brief period, while after this brief period the output buffer only supplies a limited amount of current to the subsequent stage. One embodiment of this inventive output buffer utilizes the inherent delay of an inverter and a high current FET device, arranged to form a feedback circuit, to switch off high current supplied to the subsequent stage afer a brief period. This brief period allows the output of the output buffer to supply the necessary current and voltage to switch the subsequent stage. A low current FET device in the output buffer then provides the necessary low current to maintain the state of the subsequent stage without supplying current unnecessary for the proper operation of the subsequent stage.

REFERENCES:
patent: 4701643 (1987-10-01), Laude et al.
patent: 4743782 (1988-05-01), Nelson et al.
patent: 4768830 (1988-11-01), Foss
patent: 4810969 (1989-03-01), Fulkerson
patent: 4825106 (1989-04-01), Tipon et al.
patent: 4831284 (1989-05-01), Anderson et al.

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