Recent content by bertus

  1. bertus

    I Was Lost, But Have Been Found Again

    Hello, Have a look at this thread to see what happened: https://www.electronics-lab.com/forums/threads/electronics-lab.312985/ Bertus
  2. bertus

    Electronic device/solution idea

    Hello, This is the thread on AAC: https://forum.allaboutcircuits.com/threads/device-idea.210537/ Bertus
  3. bertus

    AAC and Electronics Lab

    Hello, Yes, AAC and electronics-lab belong to the same group. There are also https://control.com/forums/ and https://eepower.com/forums/ from the same group. I am active on all four forums. They all belong to https://www.eetech.com/ Bertus
  4. bertus

    Book light improvement

    Hello, You could also use a joule thief circuit: https://www.evilmadscientist.com/2007/weekend-projects-with-bre-pettis-make-a-joule-thief/ Bertus
  5. bertus

    Book light improvement

    Hello, The cr2032 has only a capacity of 225 mAh Battery size 20 × 3.2 mm Maximum discharge current: 3 mA. Maximum pulse discharge current: 15 mA. This is also the most common lithium cell. Commonly used on computer motherboards as nonvolatile BIOS memory and real-time clock (RTC) backup...
  6. bertus

    Book light improvement

    Hello, Read this thread on aac; https://forum.allaboutcircuits.com/threads/book-reading-led-light.210446/ It will give you info. Bertus
  7. 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
  8. 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
  9. bertus

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

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

    Comedy Thread

  11. bertus

    Comedy Thread

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

    Comedy Thread

    Why go to the gym? Just try to get your cat into a carrier.
  13. 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
  14. 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
  15. 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
See more
Top