Control circuit for distributed electrical equipment

Details Control circuit for distributed electrical equipment Control circuit for distributed electrical equipment

1997-08-12

1999-07-27

Callahan, Timothy P.

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Converting input current or voltage to output frequency

327104, 363126, 363127, H03C 300

Patent

active

059296631

ABSTRACT:
A control circuit for distributed electrical equipment includes a relaxation oscillator configured for voltage to frequency conversion whereby the output frequency is proportional to the input voltage signal. An opto-coupler provides voltage isolation to the circuit and a standard 8-bit counter translates the frequency signals to a low voltage count data.

REFERENCES:
patent: 4459653 (1984-07-01), Smith
patent: 4590444 (1986-05-01), Wilcox
patent: 4658345 (1987-04-01), Ingman
patent: 4752865 (1988-06-01), Hatakeyama et al.
patent: 4801887 (1989-01-01), Wegener
patent: 5119285 (1992-06-01), Liu et al.

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