This circuit was found in the November 1966 issue of Electronics Now magazine. It uses an LDR as a sensor and has a Bargraph scale with the well-known LM3914.
This circuit was obtained in a General Electric documentation from the 80's, and can be used as a...
This circuit with a dual power supply generates sinusoidal, triangular and rectangular signals. We found...
In addition to tone control, this circuit of the SGS 1982 linear integrated circuit manual has a...