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  1. bertus

    Understanding of the circuit

    Hello, On AAC there is a thread for decoupling capacitors, wich is your case: Decoupling or Bypass Capacitors, Why? Bertus
  2. bertus

    Understanding of the circuit

    Hello The capacitor is there for noise suppresion from AVDD Bertus
  3. bertus

    Unknown Chip In My Vaporizer

    Hello, Shrink the file to about 300K and post it over here. Bertus
  4. bertus

    HC05N

    Hello, How many pins has the chip? It could be an 74HC05 hex inverter when it has 14 pins. Bertus
  5. bertus

    Stage Line 500W amp repair project

    Hello, Is it the input of a laptop? Wich brand and type is it? Bertus
  6. bertus

    Stage Line 500W amp repair project

    Hello, I have the number wrong, it is post #479. It is made by Wendy (william before his transition). Does the card have a line input? That can handle more than a MIC input. Bertus
  7. bertus

    Stage Line 500W amp repair project

    Hello, Have a look at the specs of your sound card. The circuit in post #429 has 5 V zeners to limit the output, but that may be to high for the sound card. Bertus
  8. bertus

    NIXT VFD V11 Clock

    Hello, The documentation seems to be here: https://drive.google.com/drive/folders/0B3w2uIW46VgQWW1Bc1pRR3VKazg Where did you get the info that there is a 600 Volts booster? The schematic shows a boost converter of 27 Volts. This shop shows the data of the IV-11...
  9. bertus

    NIXT VFD V11 Clock

    Hello, The one I show is not yours. The one you have is on instructables: https://www.instructables.com/IV-11-VFD-Tube-Clock-Assembly-Guide/ Bertus
  10. bertus

    NIXT VFD V11 Clock

    Hello, Is this the kit? https://www.tindie.com/products/Omnixie/iv11-vfd-tube-clock-diy-soldering-kit-or-assembled/ Are these the docs: English: Circuit Schematic Assembly Instructions BOM User Manual Bertus
  11. bertus

    NIXT VFD V11 Clock

    Hello, Are you building this project? http://kevinrye.net/index_files/large_vfd_clock_part1.php Bertus
  12. bertus

    Stage Line 500W amp repair project

    Hello, Here is a circuit to use with the PCSCOPE. It comes from post #5 of this thread on AAC: https://forum.allaboutcircuits.com/threads/pc-oscope.12149/ Bertus
  13. bertus

    How does this circuit drop 220vac to 12vdc?

    Hello, The circuit is called wattless voltage dropper. The orange capacitor is a like a resistor for AC. As it is directly coupled to the mains, it is very dangerous. I would not make the circuit. Bertus
  14. bertus

    Stage Line 500W amp repair project

    Hello, When you want to look at a good distributer, have a look at Farnell. They have about 80 models upto 18000 pounds. (I do not know how deep you pockets are) ;)...
  15. bertus

    What is the use of IC 74ACT244MTCX (dsPICDEM MCLV-2 development board)

    Hello, As far as I can tell there are two kinds of grounds used in the schematic: Bertus
  16. bertus

    Connector ID help

    Hello, Is it the series 1 from this ctalog: https://www.te.com/commerce/DocumentDelivery/DDEController?Action=showdoc&DocId=Catalog+Section%7F82021_CPC_sections1-5%7F0807%7Fpdf%7FEnglish%7FENG_CS_82021_CPC_sections1-5_0807.pdf%7F66504-9 Bertus
  17. bertus

    Book Reviews

    Hello, Here is a collection of circuit books: https://archive.org/details/encyclopediaofelectroniccircuitsvol1/Encyclopedia%20of%20Electronic%20Circuits%20-%20Vol%201 Bertus
  18. bertus

    Stage Line 500W amp repair project

    Hello, Yes, O/P is output, I/P is input. Bertus
  19. bertus

    And now something weird

    Mystery scoop:
  20. bertus

    Stage Line 500W amp repair project

    Hello, Mine is even older (1971): https://w140.com/tekwiki/wiki/454 This is the one from your video (1989): https://w140.com/tekwiki/wiki/2205 Bertus
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