Apparatus adaptable for use as a replacement output driver in a

Details Apparatus adaptable for use as a replacement output driver in a Apparatus adaptable for use as a replacement output driver in a

1990-03-28

1992-01-07

Westin, Edward P.

Electrical transmission or interconnection systems

Personnel safety or limit control features

Interlock

307270, 307147, H03K 326, H01B 730

Patent

active

050794426

ABSTRACT:
An apparatus adaptable for pin-compatible replacement of an output driver in a signal generating circuit which produces an output signal having a predetermined frequency at an output pin. The apparatus comprises a replacement driver module which is configured to generate a replacement output signal at the output pin, which replacement output signal preferably has a significantly higher frequency than the original output signal of the signal generating circuit. In the preferred embodiment, the replacement driver module includes an independent signal generating unit which requires only supply voltage and ground access from the signal generating circuit and generates a signal at the higher replacement frequency, a replacement driver for receiving the replacement signal and generating a replacement output signal, and a pin adaptor for effecting pin-compatible replacement in the signal generating circuit and for communicating the replacement output signal from the replacement driver to the output pin.

REFERENCES:
patent: 4438347 (1984-03-01), Gehring
patent: 4697095 (1987-09-01), Fujii
patent: 4856079 (1989-08-01), Wedgewood et al.
patent: 4906872 (1990-03-01), Tanaka
patent: 4970410 (1990-11-01), Matsushita et al.

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