This circuit is from an old Electroics Now. Its purpose is to protect the fax and modem lines of two computers of the time. Suppressors are types of the time.
An interesting type of sensor for specific applications is the sensor formed by piezoelectric...
This simple receiver picks up local MW stations with playback on a small speaker. The antenna must...
This simple PWM circuit was found in the March 1991 issue of Radio Electronics magazine. The...