This 1970 Electronic Design circuit uses a varactor or varicap. The circuit divides the frequency of a 150 MHz signal by 2. Similar versions appear on this site.
This transmitter outputs signals to the analog TV range operating with composite video signals for analog...
This circuit, with output currents up to 500 mA, can stabilize or regulate the output voltage of a...
The critical point in this project is the adjustment of the optical system, mainly to avoid...