Miscellaneous active electrical nonlinear devices – circuits – and – Signal converting – shaping – or generating – Amplitude control
Patent
1994-01-12
1997-03-25
Callahan, Timothy P.
Miscellaneous active electrical nonlinear devices, circuits, and
Signal converting, shaping, or generating
Amplitude control
327207, 327432, 327552, H03K 508
Patent
active
056148585
ABSTRACT:
A time delay filter includes at least one field-effect transistor of the MOS type and at least one bipolar transistor having their respective base and gate terminals connected together. The bipolar transistor is coupled to an input terminal through a drive transistor, and the field-effect transistor is coupled to an output terminal. The charge time for the gate capacitance of the field-effect transistor, using the low base current of the bipolar transistor, enables high-frequency noise to be filtered out of input digital signals.
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patent: 4301383 (1981-11-01), Taylor
patent: 4471237 (1984-09-01), Kaplan
patent: 4543494 (1985-09-01), Wakimoto
patent: 4763028 (1988-08-01), Henry
patent: 4972096 (1990-11-01), Takeshima et al.
patent: 5028814 (1991-07-01), Sung et al.
patent: 5280200 (1994-01-01), Tarng
patent: 5362998 (1994-11-01), Iwamura et al.
IBM Tech Bulletin, vol. 16, No. 6, Nov. 1973, pp. 1715-1716, "Delay Pulse Generator", D.T. Cox, et al.
Callahan Timothy P.
Dorney Brett N.
Driscoll David M.
Morris James H.
Nu Ton My-Trang
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