Light controlled fader

Details Light controlled fader Light controlled fader

1983-06-20

1985-06-11

Welsh, John D.

Radiant energy

Photocells; circuits and apparatus

Photocell controlled circuit

338 15, H01L 3108

Patent

active

045230900

ABSTRACT:
A light controlled fader for providing an analog voltage output of approximately linear proportion to the position of a slider-type control mechanism. The fader includes coacting first light emitting and receiving members and coacting second light emitting and receiving members. A control member is provided to allow the amount of light received by the first and second light receiving members to be varied in an inverse proportion to one another.

REFERENCES:
patent: 3087069 (1963-04-01), Moncrieff-Yeates
patent: 3205365 (1965-09-01), Jones
patent: 4283702 (1981-08-01), Meyer et al.

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