This circuit for photography uses was found in the Electronics Experimenter Handbook Special projects magazine from 1983. The bargraph circuit powers 8 LEDs.
Author: Newton C. Braga Published:August 1, 1998 Formato:Book and e-Book Pages:...
This circuit is based on an operational amplifier that must be powered by a symmetrical source. The...
This circuit is from an old American documentation using LEDs in the rectification. The circuit...