Darlington amplifier with high speed turnoff

Details Darlington amplifier with high speed turnoff Darlington amplifier with high speed turnoff

1987-12-21

1989-12-05

Zazworsky, John

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307263, 307300, 307315, H03K 1704, H03K 1756

Patent

active

048854867

ABSTRACT:
A Darlington-type amplifier (10) having an input field effect transistor and an output bipolar transistor (T.sub.2) is disclosed with improved turn-off time. Turnoff is enhanced by short-circuiting the gate-to-source or drain capacitance of the input field effect transistor (T.sub.1) and after turnoff is complete of the input field effect transistor prior to turn off of the output bipolar transistor (T.sub.2) coupling the base of the output bipolar transistor to a reference potential to discharge minority carriers therein to complete turnoff.

REFERENCES:
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patent: 4303841 (1981-12-01), Baker
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patent: 4480201 (1984-10-01), Jaeschke
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patent: 4492883 (1985-01-01), Janutka
patent: 4500801 (1985-02-01), Janutka
patent: 4547686 (1985-10-01), Chen
patent: 4590395 (1985-05-01), O'Connor et al.
patent: 4604535 (1986-08-01), Sasayama et al.
patent: 4725741 (1988-02-01), Shekhawat et al.

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