Title: Fiber-optic photoelectric power control device

Abstract: A power control system using fiber optics and photoelectric devices for remotely and safely controlling power to a load. The system includes a power control device, a light controller and fiber optics. The power control device includes a light generator, a light sensitive device and an electronic switch. The electronic switch controls the power to the load in response to the electrical output of the light sensitive device. The light from the light generator is transmitted to the input of the light controller by a fiber optics line. The light from the output of the light controller is connected to the input of the light sensitive device by another fiber optics line. The light sensitive device converts the light signal at its input to an electrical output signal that controls the electronic switch that controls power to the load. The light controller can transmit all of the light, block all of the light, or variably modulate the light and thereby remotely and safely control the load in any desired manner.

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Inventors: Callaghan, James M. (Philadelphia, PA, US)

Application Number: 385128
Filing Date: 1973-08-02
Publication_date: 1976-12-21
Assignee:
Primary Class(es): 250/551 250/227.11
Other Classes:
US Patent Ref:

3195405	Jul, 1965	Clark et al.	250/227.
3224279	Dec, 1965	Galli et al.	250/227.
3335367	Aug, 1967	Skooglund et al.	250/227.
3385945	May, 1968	Tums	200/168.
3393800	Jul, 1968	Duran, Jr.	250/227.
3394976	Jul, 1968	Hawkins	250/227.
3407305	Oct, 1968	Sterry	250/225.
3588512	Jun, 1971	Hollien	250/229.
3612882	Oct, 1971	Sheppard	250/227.
3624404	Nov, 1971	Hines	250/227.
3765776	Oct, 1973	Bravenel	250/227.

Other Refs:
Primary Examiner: Smith, Alfred E.
Assistant Examiner:
Attorney: Sciascia; R. S., Curry; Charles D. B.