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  1. bertus

    Fault with LM5109 - High Side pulse issue

    Hello, How are the mosfets connected? You have not drawn them in your circuit. Bertus
  2. bertus

    Fault with LM5109 - High Side pulse issue

    Hello, Remove the 4.7 Ohms resistor from the bootstrap line. It will likely slow down the charging of the bootstrap capacitor. Bertus
  3. bertus

    Fault with LM5109 - High Side pulse issue

    Hello, Can you post the actual schematic? Keep the size of the image around 300 kB. Bertus
  4. bertus

    thyristor vs triac

    Hello, Have a look at the attached PDF and PDF in the link made by ON: https://github.com/Miceuz/triac-bloc/raw/master/HBD855-D.pdf Bertus
  5. bertus

    Hello, Welcome! (Introduce yourself)

    Hello, Welcome. You will find a lot of info in the resources of this site: https://maker.pro/forums/resources/ I also made a resource with troubleshooting and repair pages. Bertus
  6. bertus

    Led and battery advice please

    Hello, You can look through most leds. You will see an arm and a cup, as in the picture @Martaine2005 showed. Here is an other picture that will show you the inner works if a basic led: Keep in mind that the different colors of leds do have different voltage drops: Bertus
  7. bertus

    Just When I Thought it was Going to Be Easy

    Hello, For isolation, you could also use some heat shrink tubing. Those are available in many sizes: https://www.amazon.ca/s?k=heat+shrink+tubing&i=automotive&rh=p_6%3AA3DWYIK6Y9EEQB&dc&qid=1627498452&rnid=12035754011&ref=sr_nr_p_6_7 Bertus
  8. bertus

    cannot log in on pc

    Hello, From eerob in an email: Should be fixed now sorry about that! Bertus
  9. bertus

    cannot log in on pc

    I have sent an email to @eerob to have a look at the issue
  10. bertus

    cannot log in on pc

    I have the same issue here This is a case for @eerob On my tablet wich stays logged in i can still enter the forum
  11. bertus

    555 timer output set to 200hz is not what i was expecting to see?

    Hello, You can do better than a BUZ90A. An IRL540 will out perform the BUZ90. The breakdown voltage of the IRL is much lower, but do you really need 600 Volts? Bertus
  12. bertus

    555 timer output set to 200hz is not what i was expecting to see?

    Hello, Those are the bipolair type. What supply voltage do you use? The bipolair starts working at 5 Volts and will work upto 15 Volts. Bertus
  13. bertus

    555 timer output set to 200hz is not what i was expecting to see?

    Hello, An other question. Wich version of the 555 are you using? A bipolair version (NE555 / SE555) or a cmos version (LMC555 / ICM555). The specifications are quite different. Have a look at the attached datasheets. Bertus
  14. bertus

    555 timer output set to 200hz is not what i was expecting to see?

    Hello, Your resistors are to low in value. Try the following values: I used this page for the calculations: https://www.allaboutcircuits.com/tools/555-timer-astable-circuit/ Bertus
  15. bertus

    555 timer output set to 200hz is not what i was expecting to see?

    Hello, If you post a schematic, keep the size at max 300 kB. Did you made the circuit by yourself or from an other source? Bertus
  16. bertus

    MOV protection

    Hello, From the page: For sustained steady-state overvoltages, a typical test requirement for a traditional MOV withstands 150% of its rated voltage for a given duration. But MOVs may fail to a short-circuit condition when subjected to sustained steady-state overvoltages above this level...
  17. bertus

    And now something weird

    What's inside the Statue of Liberty?
  18. bertus

    School Project: Off-the-shelf EQ module board

    Hello, @VenomBallistics : An other chip like the MAX1044, but with output regulators is the LTC3265. Bertus
  19. bertus

    The Latest Build

    Hello, Here I found a page with about 160 guitar effect schematics / information: http://www.freeinfosociety.com/media_index.php?cat=13&subcat=11&start=0 Bertus
  20. bertus

    Negative Voltage #2

    Hello, The above posts are moved from a four year old thread: Negative Voltage Bertus
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