Hello all,
I have successfully made a shortwave transmitter using a crystal oscillator, now I want to try making a transmitter using a colpitts oscillator.
I made a video of the problem, but screwed up editing the video. You can still hear the carrier wave moving across the frequency.
The circuit I used was from this website:
http://www.electronics-tutorials.ws/oscillator/colpitts.html
What I first thought was the problem was that supply voltage was fluctuating, so I ran it through a 7805 voltage regulator, problem was still there.
I suspecting that the RF generated by the circuit is feeding back into the circuit, but I have no way of knowing this.
I have successfully made a shortwave transmitter using a crystal oscillator, now I want to try making a transmitter using a colpitts oscillator.
I made a video of the problem, but screwed up editing the video. You can still hear the carrier wave moving across the frequency.
The circuit I used was from this website:
http://www.electronics-tutorials.ws/oscillator/colpitts.html
What I first thought was the problem was that supply voltage was fluctuating, so I ran it through a 7805 voltage regulator, problem was still there.
I suspecting that the RF generated by the circuit is feeding back into the circuit, but I have no way of knowing this.