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Recent content by cippy

  1. C

    Transistor third overtone oscillation circuit

    Hi ahsan_i_h Thank you very very much for reply. I would like to test excel spreadsheet, you tell me if calculated(work) correctly? Let's look at the chart and that change
  2. C

    Transistor third overtone oscillation circuit

    Hi ahsan_i_h Thank you very much for reply. This calculation is for this transistor oscillator?
  3. C

    Transistor third overtone oscillation circuit

    Hi ahsan_i_h Please help me and with this schematics from TA31136 datasheet.. I want a formula, the calculation method for this circuit, 3rd overtone mode(overtone oscillation) 72 Mhz desired frequency X-tal = 24 Mhz L1 = 220 nH C51, C3, C2, R51 value...
  4. C

    Transistor third overtone oscillation circuit

    Please, I want a math formula, a calculation method for correct choosing , C3, C4 capacitive divider, for this circuit,to oscillate the third harmonic? desired frequency = 72 Mhz Xtal = 24 Mhz L2 = 220 nH - - - Updated - - - I know the theory, but do not know how to calculate Inductive at...
  5. C

    Transistor third overtone oscillation circuit

    Hi all I would like someone to explain to me how I can make the circuit below work on the third harmonic. What values do I need to C3 and C4, and how is it calculated? desired frequency = 72 Mhz Xtal = 24 Mhz L2 = 220 nH Thank in advance Robert
  6. C

    Input circuit for TA31136

    Capacitors C1,C2 are in series or in parallel?
  7. C

    Input circuit for TA31136

    I do not understand, you can be a little more explicit... The upper limit of L is when C2 is not required, while at low L/C ratios the circuit becomes sensitive to small component value changes.???? As a general rule, L must be smaller than Lmax but not much smaller.??/
  8. C

    Input circuit for TA31136

    Thank you very much for answers. The datasheet says TA31136 input impedance is around 4 KOhm at 21,7 Mhz The formula posted below is good? The ratio of L:C is important?? Best Regards
  9. C

    Input circuit for TA31136

    Hello How to calculate the input circuit (C1, C2, L2, L3) for certain frequencies? Thanks a lot!
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