Electrical transmission or interconnection systems – Nonlinear reactor systems – Parametrons
Patent
1991-09-25
1993-07-20
Westin, Edward P.
Electrical transmission or interconnection systems
Nonlinear reactor systems
Parametrons
3072966, 307467, H03K 1920, H03K 301
Patent
active
052296628
ABSTRACT:
An improved Emitter-Coupled Logic (ECL) circuit having a voltage comparator circuit connected to an emitter follower output circuit, the emitter follower output circuit includes an npn transistor having an emitter connected through a resistor to a voltage supply, and wherein the emitter follower output circuit produces a current in the resistor during operation of the ECL circuit, an improvement in the emitter follower output circuit including programmable connecting means for connecting the emitter follower output circuit to any one of a plurality of alternative voltage supplies, and maintaining means for maintaining substantially the same level of current in the resistor when the emitter follower output circuit is connected to any one of the plurality of alternative voltage supplies.
REFERENCES:
patent: 4670673 (1987-06-01), Varadarajan
patent: 4833342 (1989-05-01), Kiryu et al.
patent: 4864162 (1989-09-01), Maoz
patent: 4900955 (1990-02-01), Kurpan
Lam Nim C.
Truong Mau N.
Yee Loren
National Semiconductor Corporation
Sanders Andrew
Westin Edward P.
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