This transmitter emits a modulated signal at a frequency given by the first transistor in the phase shift oscillator. The circuit is from an Australian publication from 1991.
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...