This simple bargraph photometer appeared in the November 1987 issue of Radio Electronics magazine. The sensor is a phototransistor and the scale depends on resistors at the comparator inputs.
Photometer (CB25092E)
- Details
- Written by: Newton C. Braga
This simple bargraph photometer appeared in the November 1987 issue of Radio Electronics magazine. The sensor is a phototransistor and the scale depends on resistors at the comparator inputs.
