Light measuring and indicating circuit

Details Light measuring and indicating circuit Light measuring and indicating circuit

1975-11-04

1977-12-06

Corbin, John K.

Optics: measuring and testing

Photometers

Photoelectric

250214P, 354 23D, 356226, G01J 142, G03B 708

Patent

active

040614310

ABSTRACT:
A light measuring and indicating circuit utilizing indicating elements such as light-emitting diodes, to indicate corresponding light intensity levels. Intermediate levels are indicated without increasing the number of flip-flops employed in an activating circuit for the light-emitting diodes by intentionally causing the circuit to activate light-emitting diodes alternately. The activating circuit includes a reversible digital counter controlling the light-emitting diodes, two comparators for operating the counter reversibly in response to the comparison of light-dependent and standard signals, and a digital-to-analog converter which varies one or more of said signals in accordance with a counter output.

REFERENCES:
patent: 3724955 (1973-04-01), Takahashi et al.
patent: 3836262 (1974-09-01), Yata et al.
patent: 3895875 (1975-07-01), Kitaura et al.
patent: 3899788 (1975-08-01), Toyoda
patent: 3959791 (1976-05-01), Takahashi et al.
patent: 3990799 (1976-11-01), Nanba et al.

Affiliated with

Also associated with

Rating

Light measuring and indicating circuit does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Light measuring and indicating circuit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Light measuring and indicating circuit will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1548163