This circuit produces sounds of 6 different notes depending on the keys activated. The circuit is from a Radio Electronics from May 1965. The transistor must be equipped with a heat radiator.
July 25, 2016 –Mouser Electronics Inc. is teaming up with celebrity engineer Grant Imahara for the...
This CW circuit was found in a Radio Amateur Today from the 890s. The CMOS circuit must be powered by...
This circuit was obtained from an old American publication. The uA702 is a differential amplifier and...