Posts Tagged ‘Colpitts Oscillator’
24th Dec 2009 | Comments Off
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 used between gate, a small series capacitor, ground, and source. Component’s values that we choose must …
Read More 16th Nov 2009 | Comments Off
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 is done by two Schottky diodes, that maintain the signal at approximately +11dBm. This circuit give …
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