This percussion circuit was found in an Electronics World of 1968. The transistor may be general purpose and the power supplied at 12 V. The signal must be applied to an amplifier.
This circuit uses the 7815 regulator to obtain a voltage for motor control num shield for PC. The...
This 12 V to 110 V inverter with 100 W was found in a 1977 Signetics manual. The transformer must...
This basic version of the timer with the 555 was found in documentation from the 1980s. The relay...