In the diagram from the November 1999 Electronics Now magazine we have the way to improve both the gain and the stability of the LM386 amplifier.
This circuit was obtained from a 90s Radio Electronics. The integrated circuit used HAA11508 is not...
This circuit was found in a documentation of the 80s, having didactic purpose. For R1 values...
This timer activates a relay after a time interval of up to 15 minutes has elapsed, starting from...