Tag Archives: Colpitts Oscillator

Colpitts Crystal Oscillator

Posted on December 24, 2009 by Adam
colpitts-xtal-oscillator-circuit

We can create Crystal Colpitts oscillator using a parallel mode crystal and a transistor. The circuit shown by the following figure As an inductance, this circuit uses crystal. The crystal circuit consist of a large value capacitive divider that is  … Continue reading →

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Op-Amp Colpitts Oscillator

Posted on November 16, 2009 by Adam
high-frequency-colpitts-oscillator

Colpitts oscillator can be implemented using op-amp as long as we have an op-amp with proper bandwidth. Here is an example of such circuit: LT1190 or  LT1191 op-amps is used to serve as an excellent gain stages. Limiting the gain … Continue reading →

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