Circuit arrangement for an electronic exposure meter

Details Circuit arrangement for an electronic exposure meter Circuit arrangement for an electronic exposure meter

1985-07-23

1987-03-03

Perkey, William B.

354484, 354486, 3542891, G03B 702, G03B 726, G03B 1718

Patent

active

046471758

ABSTRACT:
In a switching circuit for an electronic exposure meter in optical devices with a photoelectric converter at the input of an amplifier which logarithmizes the output current from said converter, with a temperature compensation circuit and a photoelectric current limit value circuit and with an indicator, a voltage supply source having a main switch, means are provided on the device for coupling to the main switch. These means effect automatic connection or disconnection of the switching circuit to or from the supply source.

REFERENCES:
patent: 3608448 (1971-09-01), Imai
patent: 4387977 (1983-06-01), Uchidoi et al.
patent: 4540266 (1985-09-01), Okubo

Affiliated with

Also associated with

Rating

Circuit arrangement for an electronic exposure meter does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Circuit arrangement for an electronic exposure meter, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Circuit arrangement for an electronic exposure meter will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1014104