Found in an Electronics Now from the 90s, this circuit appears elsewhere in this section and website. The diodes are for general use and the basic frequency is given by C.
This circuit can act as a shield being controlled by a microcontroller by pin 1 or 2. The...
May 2017 - Mouser Electronics announces the availability of new Toshiba SSM6K N Channel MOSFETs...
This circuit is from a 1987 magazine, but it can still be easily assembled, as the components are...