This circuit was found in the November 1994 issue of Electronics Now magazine. The circuit is based on the 566 PLL and generates signals up to about 200 kHz.
An interesting type of sensor for specific applications is the sensor formed by piezoelectric...
This circuit is from Radio Electronics from the 90s. It supplies a voltage between 800 V and 2 000...
This circuit was obtained in a 1989 publication and is quite simple to assemble, but critical in...