colpitts

Could someone suggest a theoretical approach to designing a Colpitts oscillator for microwave frequency applications?

Hello everyone! I'm trying to understand how the Colpitts oscillator works. Could someone explain the roles of the capacitors labeled C and C3 in the circuit? What are they used for? Thanks in advance!

I have this circuit where I will use as a DCO called common source Colpitts Oscillator the problem is i try to connect two capacitors in parallel to the C1 capacitors then put a switch in between them something like this. where if the switch is on then it turns into parallel then it varies...

Hi i make an oscillator circuit ( colpitts) and the circuit work in multisim NI produce a sine wave with f=330 kHz if i setup this circuit in bread board i some case not work ? what happen thank George

Hello everyone, im having trouble with a prototype of a Colpitts oscillator seen in the spice simulation linked to the post. as it can be seen, the circuit generates a 16kHz waveform. However when I went to create a prototype of this circuit. I was seen to get no output on the oscilloscope. Each...

Hello everyone, I'm building a radio transmitter with a Colpitts oscillator schema and everything works fine. I built the circuit and tested in the Oscilloscope and with L=470uH, C1=100pF, C2=100nF I created a 549KHz 6Vpp senoidal (with 5v as source), as we can see bellow: Theoretically, the...

First, sorry for my bad english. I'm building a project using a Colpitts Oscillator with Differential Pair, designed for ~117.6MHz. I'm using LTspice for simulation. The oscillator individually oscillates, but I need it to oscillate when I add a sensor model (as seen in the image in the...

I decided to design a Colpitts oscillator with an output frequency of 1,2 MHz followed by a buffer stage. No other specs for the moment. I would prefer to keep unchanged the coil (I got it salvaged from old radio gear) and the transistors while using a +9V PSU. Once having it working I would...