This circuit was found in the February 1980 issue of Radio Electronics magazine. The digital circuit was shown in two parts, using 20 LEDs in a configuration with the LM3914.
This circuit, which may have appeared elsewhere on this site, is from the integrated...
We found this circuit in a 90s Radio Electronics. The circuit uses a transconductance operational...
This circuit was obtained from an 80's documentation from General Electric. The circuit uses an...