Miscellaneous active electrical nonlinear devices – circuits – and – Specific signal discriminating without subsequent control – By amplitude
Patent
1994-09-30
1995-11-14
Wambach, Margaret Rose
Miscellaneous active electrical nonlinear devices, circuits, and
Specific signal discriminating without subsequent control
By amplitude
327 95, 327 93, 327 96, G11C 2702, H03K 500
Patent
active
054670357
ABSTRACT:
An input terminal is connected to bases of first and second transistors. Collectors of the first and fourth transistors are connected to a power-source terminal. Collectors of the second and third transistors are grounded. A base of the third transistor is connected to an emitter of the first transistor. A base of the fourth transistor is connected to an emitter of the second transistor. One terminal of the capacitor is grounded and the other terminal thereof is connected to emitters of the third and fourth transistors and an input of an output buffer whose output is connected to an output terminal. A collector of a fifth transistor is connected to the power-source terminal and a base thereof is connected to the output terminal. A collector of a sixth transistor is grounded and a base thereof is connected to the output terminal. A first constant-current source is connected to an emitter of the fifth transistor and a base of the fourth transistor. A second constant-current source is connected to an emitter of the sixth transistor and the base of the third transistor. A third constant-current source is connected to the emitter of the first transistor and turned on at a sampling time. A fourth constant-current source is connected to the emitter of the second transistor and turned on at the sampling time.
REFERENCES:
patent: 5331230 (1994-07-01), Ichihara
patent: 5381146 (1995-01-01), Kolte
Ohi Susumu
Shiba Hiroshi
NEC Corporation
Wambach Margaret Rose
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