This circuit was found in a Popular Electronics from the 90s. The circuit has 4 frequency ranges selected according to the capacitors. Signal is rectangular.
This circuit is from old documentation but uses components still common in our market. The circuit...
August 2016 - It can be obtained from Mouser Electronics the battery protectors series bq7790x of...
This interesting touch dimmer was obtained in a 1993 publication, basically consisting of a...