Help needed wiyh hartley oscillator project

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  • #16272
    Credits: 25

    Hi all,
    I’m trying to design a hartley oscillator
    with a transistor, and I’m a PSpice user.
    I’ve tryed
    reproducing various layouts found online or taken from books, but I can’t obtain good results.
    Can someone give me some help?
    Many Thanks

    Credits: 222

    Hi Federico,

    what type of transistor JFET or BJT? In any case, an hartley oscillator is not so easy to simulate accurately
    because it uses several important concepts such as the resonance and the feedback.In the real circuit the
    electrical noise is amplified by the tuned resonant circuit.
    However, respecting certain rules of good design you can get excellent results.
    For my experience if at the resonance frequency you use a resonant circuit with a
    good Q factor, with an appropriate choice of inductance and capacitance, but above all, with a good biasing of the transistor, and this depends if you use a JFET or BJT, under certain conditions on the loop gain and gain of amplifier circuit imposed by the theory, you can get very good results.You can see here one of my projects.

    Credits: 25

    I’ ve downloaded  your project with my coupon and I found it very useful, thank you

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