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  1. #1
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    Lc meter Oscillator Circuit

    Hi everybody
    I am trying to simulate the lc oscillator given below using pspice but its not working the oscillations of the tank circuit are in the femtovolts range, can any body help me with the circuit or any other useful link.
    Kerry D. Wong » Blog Archive » AVR LC Meter With Frequency Measurement

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  2. #2
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    Re: Lc meter Oscillator Circuit

    The circuit should work fine, oscillating around 500kHz. Try to change the op amp model in your simulator (for example with LT 1260)


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  3. #3
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    Re: Lc meter Oscillator Circuit

    Well i changed the comparator but that didn't solve my problem, i am simulating just the first part of it, the pspice file is attached, plz if u can help me



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    Re: Lc meter Oscillator Circuit

    At the moment I don't have PSpice in the computer that I am using, but you can download the free Spice simulator from LT and see that everything is fine with the circuit (see the attachment).

    Linear Technology - LTspice IV Downloads and Updates



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  5. #5
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    Re: Lc meter Oscillator Circuit

    thanx alot sir, i got it working with pspice, actually i was placing the 10uF capacitor between lc tank and comparator input as it is given in the schematics.
    one last thing i would like to ask is that how should i add capacitor or inductors to this, because when i connect another indutor in parallel it gives a loop error, and how this lc circuit is exited? where i can study about this kind of lc comparator oscillator



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