Recent content by bertus

  1. bertus

    Suitable replacement for a large Siemens capacitor in an old IBM XT power supply

    Hello, The datasheet i posted shows wich pin is positive and wich pins are negative. Even an axial capacitor would be possible to use. The positive can go through the pcb and the negative lead can be extended by soldering a wire to it and put the wire in the negative connection hole. Bertus
  2. bertus

    Suitable replacement for a large Siemens capacitor in an old IBM XT power supply

    Hello, In germany there is a site called askjanfirst. There is an alternative for the capacitor there. On this page about capacitors, there is an 220 uF 450 Volts capacitor: https://www.die-wuestens.de/dindex.htm?/k1.htm Look for code KON22145 on the page. Bertus
  3. bertus

    Suitable replacement for a large Siemens capacitor in an old IBM XT power supply

    https://www.tedss.com/2020057304?srsltid=AfmBOoooKiHZlNTXfWLMOD9dqlPadNTGk-DdInaPHUQgbglh1x2a9-DC
  4. bertus

    Comedy Thread

  5. bertus

    Comedy Thread

    Multitasking is a pretentious word for doing a lot of things halfway.
  6. bertus

    Comedy Thread

    Why go to the gym? Just try to get your cat into a carrier.
  7. bertus

    issue with homemade DC motor + hall effect sensor

    Hello, With 2.2 volts there is a possibility that the mosfet will not turn on, as the gate threshold is between 2 and 4 volts for the irzf44. An irlz44 will likely have more success. Bertus
  8. bertus

    issue with homemade DC motor + hall effect sensor

    Is the orientation of the magnets (north / south) correct? Is the polarity of the coils correct (is one of the coils the wrong way around)? Did you try to hold the hallsensor the other way around? Bertus
  9. bertus

    issue with homemade DC motor + hall effect sensor

    Could there be a problem with the mosfet. It has a gate voltage threshold of 2 to 4 volts. An irlz44 has a threshold voltage of 1 to 2 volts. Bertus
  10. bertus

    Comedy Thread

  11. bertus

    Comedy Thread

  12. bertus

    ECU repair

    Hello, I see a couple of those yellow tantalium capacitors. Those tend to fail as a short circuit. Bertus
  13. bertus

    Comedy Thread

    For the oldies:
  14. bertus

    Ignition coil...

    Hello, Have a look at a circuit created by danko on AAC: https://forum.allaboutcircuits.com/threads/trying-to-make-a-moped-ignition-coil-tester.210360/#post-2033847 Timing might be adjusted for longer times between pulses. Bertus
  15. bertus

    Amplifier biased too hot?

    Hello, Have a look at the attached pdf. Bertus
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