Using 4 operational amplifiers this circuit generates 4 different tones. The circuit is from an American documentation from the 90's. Operational amplifiers are tTL084.
With a 22 V symmetrical power supply this amplifier provides 15 W of output power with excellent...
This circuit is based on an uncommon Texas component today, as found in an American 1980s...
This voltage-controlled oscillator or VCO was found in a Radio Electronics magazine from July...