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 unit is intended to power 2 AA or AAA battery powered applications from the car battery,...
June 2017 - Vishay Siliconix's new Generation IV (Gen IV) Channel N MOSFETs can now be purchased...
This VFO was found in a 1980s documentation. The central frequency is given by the crystal and the...