This control for bass, midrange, and treble was found in the March 1995 issue of Electronics Now magazine. The circuit requires a dual power supply.
Found in a 1970 EEE, this circuit can be applied to TTL ports. The supply is 5 V and the...
This circuit is from a 90s Popular Electronics. The integrated circuit is from that time. The...
This automation control circuit uses two relays to control 4 loads using just one switch. The...