This circuit has the intensity of the signals controlled by the light that falls on the sensor. Note that it is not a frequency-controlled oscillator. Equivalent transistors can be used.
June 2017 - Mouser Electronics already has Maxim's new nanoPower MAX4000 comparators in stock with an...
We found this circuit in an old documentation for hams. In it we have the way to use a varicap to...
June 2016 - Mouser Electronics already has in stock the new LM5165 from Texas Instruments that...