This light meter or photometer was found in an American documentation from the 90s. The comparator can be an LM339 or equivalent and the phototransistor can be any type.
Photometer (CB7911E)
- Details
- Written by: Newton C. Braga
This light meter or photometer was found in an American documentation from the 90s. The comparator can be an LM339 or equivalent and the phototransistor can be any type.
