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I decided to build a colpitts oscillator using a jFET (2N3819): jFET colpitts oscillator

It seems to work fine @ http://www.falstad.com/circuit/ but when i try to build this circuit it does not work, any ideas?

Thank you in advance.

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  • \$\begingroup\$ What voltage do you see on the drain? Ditto on the grid? (er, gate)? \$\endgroup\$ – user_1818839 May 15 '16 at 20:22
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Is transistor modeled in the simulator the 2N3819?

EDIT: https://www.fairchildsemi.com/datasheets/2N/2N3819.pdf

Sorry, for the not-too-insightful initial thoughts on your question. By the looks of the data sheet above, the transistor you're using operates on much larger voltages than the one in the simulator.

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  • \$\begingroup\$ I don't think so, no. Thanks for the answer. \$\endgroup\$ – Waffle Man May 15 '16 at 17:37
  • \$\begingroup\$ edited my initial answer \$\endgroup\$ – Malcolm Regan May 15 '16 at 17:45

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