This circuit was found in an ancient American documentation. With it is possible to double the frequency of a transmitter For the range of 6 meters obtaining 8 W. The circuit makes use of varicap.
This circuit used in signaling for boats, cars or barriers was found in a 1980s documentation. It still...
We found this circuit very simple in an old documentation. The relay is high voltage sensitive, but...
May 2017 - The new non-contact magnetic sensors from Piher have applications such as position...