patpin's Recent Activity

  1. patpin attached a file to the thread Hartley oscillator: amplitude not stable.

    I like to walk a lot too... Besides I work on an oldtimer. The coil is loaded as in...

    IMG_20180814_200748.jpg Aug 14, 2018 at 2:23 PM
  2. patpin liked Bordodynov's post in the thread Hartley oscillator: amplitude not stable.

    I do not have a car (I walk) and I did not do automobile electronics.I need to know the circuit of the coil and how this coil is...

    Aug 14, 2018 at 2:18 PM
  3. patpin replied to the thread Hartley oscillator: amplitude not stable.

    What do you mean by "maximally open core", a 13 mm ferrite rod? I do not understand what you mean by "Tell me the order of work". The...

    Aug 14, 2018 at 9:40 AM
  4. patpin replied to the thread Hartley oscillator: amplitude not stable.

    Indeed first start wont be easy but with a strobe I can adjust the timing. The voltage coming from the pickup coil is only for...

    Aug 14, 2018 at 8:21 AM
  5. patpin replied to the thread Hartley oscillator: amplitude not stable.

    Please allow me one more question concerning the coil L1 #46. Which core would you prefer (maximum height 13mm and thickness 8mm). The...

    Aug 14, 2018 at 6:11 AM
  6. patpin replied to the thread Hartley oscillator: amplitude not stable.

    I want to fire the plug by means of an automotive coil with 2 windings: one is 1.5mH and the one where the plug is on is 15H. I bought a...

    Aug 14, 2018 at 5:12 AM
  7. patpin liked Bordodynov's post in the thread Hartley oscillator: amplitude not stable.

    With transistors IGBT there is a problem: they have a large threshold voltage of ~ 5V. I specifically limited the output voltage to not...

    Aug 14, 2018 at 5:10 AM
  8. patpin replied to the thread Hartley oscillator: amplitude not stable.

    Fantastic result. One last question. Can your output directly drive an IGBT (with Zener incorporated) or does one need eg. a totem pole...

    Aug 14, 2018 at 4:26 AM
  9. patpin liked Bordodynov's post in the thread Hartley oscillator: amplitude not stable.

    See [ATTACH] [ATTACH]

    CirAB.png PlotAB.png Aug 14, 2018 at 4:24 AM
  10. patpin liked Bordodynov's post in the thread Hartley oscillator: amplitude not stable.

    As the ferrite rods approach, the inductance increases. I made inductance, which depends on time. In the circuit node named "L", the...

    Aug 13, 2018 at 1:35 PM
  11. patpin replied to the thread Hartley oscillator: amplitude not stable.

    Do you mean a trimming cap.?

    Aug 13, 2018 at 1:17 PM
  12. patpin replied to the thread Hartley oscillator: amplitude not stable.

    Another question, can I simulate the arrival and absence of the ferrite rod of 1mm thickness at 0.5mm distance of the E shaped ferrite (...

    Aug 13, 2018 at 10:02 AM
  13. patpin liked Bordodynov's post in the thread Hartley oscillator: amplitude not stable.

    See [ATTACH]

    StabCurr.png Aug 13, 2018 at 9:58 AM
  14. patpin replied to the thread Hartley oscillator: amplitude not stable.

    Looks very nice, very stable current I(L1) in #36 ... but since I am not an expert as you apparently are.... , can you explain yr...

    Aug 13, 2018 at 9:58 AM
  15. patpin replied to the thread Hartley oscillator: amplitude not stable.

    Bordodynov, concerns diagram with post 22; C7; Is this parasitic or what's the purpose?

    Aug 13, 2018 at 2:51 AM