This circuit was found in a 90s Popular Electronics. The circuit operates in the range determined by L1. The integrated circuit used is uncommon today.
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...