Inherently balanced voltage regulation and current supply for bu

Details Inherently balanced voltage regulation and current supply for bu Inherently balanced voltage regulation and current supply for bu

1995-11-13

1997-06-03

Hudspeth, David R.

Electronic digital logic circuitry

Signal sensitivity or transmission integrity

Bus or line termination

326 86, 326101, 327530, H03K 1716

Patent

active

056358539

ABSTRACT:
An inherently balanced electrical supply system for a bus provides improved reliability for bus termination in computer systems. The system is particularly well suited for applications such as personal computer systems. The apparatus includes a single current source that is fed into a feeder line connected to opposite ends of the bus at a point at about the center of the feeder line. The feed path is thus divided into two equal-length segments connected to opposite ends of the bus. Integrated circuit chips connected to the bus, when switched on, draw essentially equal amounts of current through each feeder segment, creating substantially equal voltage drops at both ends of the bus, minimizing the voltage difference. Alternative bus configurations are provided in embodiments of the present invention to suit various board spacing requirements.

REFERENCES:
patent: 5023488 (1991-06-01), Gunning
patent: 5111080 (1992-05-01), Mizukami et al.
patent: 5254883 (1993-10-01), Horowitz et al.
patent: 5347177 (1994-09-01), Lipp
patent: 5438281 (1995-08-01), Takahashi et al.
patent: 5481209 (1996-01-01), Lim et al.
patent: 5528168 (1996-06-01), Kleveland

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