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  1. bertus

    Cat 6 Ethernet Cable data restriction?

    Hello, The following apge will tell you a lot about ethernet configuration on ubuntu: https://ubuntu.com/server/docs/network-configuration Bertus
  2. bertus

    8 and 6 ohm speakers

    Hello, As said, what are you trying to do? Have a look at this page for connecting four speakers to an amplifier: https://geoffthegreygeek.com/how-to-wire-four-hifi-speakers/ Bertus
  3. bertus

    Cat 6 Ethernet Cable data restriction?

    Hello, How are the driver settings in the computer? Will an other type of cable give more speed? Bertus
  4. bertus

    [HELP]Led dimmer

    Hello, There are MANY dimmer circuits on the internet: https://www.google.com/search?as_st=y&tbm=isch&as_q=220+V+ac+led+lamp+dimmer+schematic&as_epq=&as_oq=&as_eq=&imgsz=&imgar=&imgc=&imgcolor=&imgtype=&cr=&as_sitesearch=&safe=images&as_filetype=&tbs= Beware that the 220 Volts AC dimmers are...
  5. bertus

    [HELP]Led dimmer

    Hello, 12 Volts leds can be dimmed using PWM. 220 Volts AC led lamps can (most times) be dimmed with a phase adjusting dimmer. The 220 Volts leds must be suitable for dimming. Bertus
  6. bertus

    Blue Light - Difference between mcd and mW?

    Hello, Have a look at the following pages: http://www.ledfantastic.com/knowledge/advanced/brightness.html#:~:text=An%20old-style%20LED%20that%20just%20glows%20without%20giving,brightness%20of%20between%20about%205%2C000%20and%2012%2C000%20mcd...
  7. bertus

    And now something weird

    Robot questioned in the house of lords:
  8. bertus

    Difference between Board Supply and Motor Supply

    Hello, Looking at the application notes in the documentation section: https://www.nxp.com/docs/en/application-note/AN12235.pdf https://www.nxp.com/docs/en/application-note/AN12435.pdf I see that the fet stage has a 35 Volts capacitor on the power lines: I would not use voltages higher than 24...
  9. bertus

    GFG TVS Diode

    Hello, It could be a Transient voltage supressor Vrwm=28.2V, Vbr=31.4..34.7V, Ipp=33A, 1500W(1ms) On this page there are several manufacturers mentioned: https://smd.yooneed.one/code4746.html Bertus
  10. bertus

    Introduction of a 40yr old beginning

    Hello, An other site with a lot of information on electronics is the EDUCYPEDIA: http://educypedia.karadimov.info/electronics/electronicaopening.htm As the site is quite old, some links may not work. Often not working links can be found back in the Internet Archive: https://archive.org/ Copy...
  11. bertus

    Cat 6 Ethernet Cable data restriction?

    Hello, What kind of Ehternet cable are you using? This page shows you the difference between all available types: https://www.tripplite.com/products/ethernet-cable-types Bertus
  12. bertus

    What am I not seeing here?

    Hello, I have removed the post as spam. gosloto is a gambling site. Bertus
  13. bertus

    [HELP]Led dimmer

    Hello, As said, lookup a PWM circuit. Those can be mada witha NE555 or other smitt-trigger chips. What will be the working voltage? Bertus
  14. bertus

    Surplus components

    Hello, As for the tubes/valves, have a look at this resource for more information on them: https://maker.pro/forums/resources/vintage-info-from-the-days-of-vacuum-tubes.67/ Bertus
  15. bertus

    Need help to identify this zener diode

    Hello, I also see that C2 looks a bit bulged. Have a look at this page for spotting bad caps: https://www.robotroom.com/Faulty-Capacitors-1.html Bertus
  16. bertus

    Funny life tricks channel on youtube

    https://www.youtube.com/c/Thaitrick/videos
  17. bertus

    charging 20V laptop from 60V e-bike, using voltage reducer?

    Hello, As @Alec_t said, The laptop may only work with the adapter from the same brand. USB can negotiate with the charger to provide more power. This negotiation may also include verification of the used brand / series of the charger. Bertus
  18. bertus

    And now something weird

  19. bertus

    Step Down transformers, will they harm an electronic machine?

    Hello, No, a stepdown or stepup transformer can not change the frequency. Bertus
  20. bertus

    Step Down transformers, will they harm an electronic machine?

    Hello, The problem could be in the 50 Hz and 60 Hz difference. Bertus
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