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  1. bertus

    HEADPHONE PANEL JACK CONTROL

    Hello, @73's de Edd , He uses the picture from the first transistor as his avatar: https://commons.wikimedia.org/wiki/File:1st-Transistor.jpg https://www.edn.com/1st-successful-test-of-the-transistor-december-16-1947/ @HANKMARS , is a pop-up shown when you insert something in the headphone...
  2. bertus

    Tracking and layout help

    Hello, The trace will need to have a size to be able to carry the current. The trace for the indicator led can be much smaller that the main current track. The indicator led will likely be in the milli amp range as the main current will be in the amps range. Bertus
  3. bertus

    Tracking and layout help

    Hello, Perhaps this page will help: http://www.hardwarebook.info/PCB_trace Bertus
  4. bertus

    display for project

    Hello, Here you can see the difference: Bertus
  5. bertus

    capacitor

    Hello The picture has a lot of grain The picture does not show any numbers Are those on the other side ? Bertus
  6. bertus

    Heathkit Condenser Checker

    Hello, @(*steve*) How is the C-3 behaving? I found a complete manual here: https://www.vintage-radio.info/download.php?id=45 More heathkit manuals and schematics can be found here: https://www.vintage-radio.info/heathkit/ Bertus
  7. bertus

    Heathkit GC-1197 Chimes Off Tone and Skipping Beats

    Hello, The full set of schematics and manual for the chimes can be downloaded here: https://www.vintage-radio.info/download.php?id=86 BTW perhaps they installed a wrong capacitor for C306. Bertus
  8. bertus

    Heathkit GC-1197 Chimes Off Tone and Skipping Beats

    Hello, On the chimes board there is a potmeter (R324) to adjust the frequency of the chimes: Here you can find the potmeter on the board: I have also added a PDF with the full schematic of the chimes. More heathkit manuals and schematics can be found here...
  9. bertus

    Basic question I imagine. Don't have a clue.

    Hello, It looks like the docking bay is combined with the receiver: Box contents: Mouse Docking station which is also the RF receiver USB to PS2 adapter Instruction manual & driver CD AC power adapter for docking station https://www.techpowerup.com/review/logitech-mx1000/single-page.html You...
  10. bertus

    Why I need a capacitor in parallel to micro limit switch

    Hello, Read the following article on switch debounce: https://www.allaboutcircuits.com/technical-articles/switch-bounce-how-to-deal-with-it/ Bertus
  11. bertus

    CCTV cameras

    Hello, Here is the manual from the wayback machine: https://web.archive.org/web/20210120100925/http://leeds.cctvdirect.co.uk/DlDocs/TwilightPTZ/27X_IR_PTZ_UserManual.pdf From page 3: Bertus
  12. bertus

    Peak Power and Nominal power of motor

    Hello, Perhaps this book might interest you: https://archive.org/details/hughesa.druryb.electricmotorsanddrives.fundamentalstypesandapplications5ed2019 Bertus
  13. bertus

    Book Reviews

    Hello, The internet archive has over 100 collections of books, manuals and magazines: =mediatype%3A%22collection%22']https://archive.org/details/texts?query=electronics&and[]=mediatype:"collection" This is one of my favorit collections: https://archive.org/details/folkscanomy_electronics Bertus
  14. bertus

    Yamaha HS8 suddenly stopped working

    Hello, When the units where bought in july, is there no warenty? When the units are already opened, the warenty might be gone. Bertus
  15. bertus

    Peak Power and Nominal power of motor

    Hello, Perhaps the following article might interest you: https://x-engineer.org/automotive-engineering/vehicle/electric-vehicles/battery-electric-vehicles-bev-automotive-industry/ Bertus
  16. bertus

    LM3886 amp build

    Hello, How large is the heatsink? The TF version will likely need a larger heatsink, as the case has a plastic cover. Bertus
  17. bertus

    LM3886 amp build

    Hello, Wich version of the LM3886 are you using? There are the LM3886T and the LM3886TF. Bertus
  18. bertus

    And now something weird

    Very local rain:
  19. bertus

    LM3886 amp build

    Hello, Here is the schematic from that page: Did you connect ALL the ground connections together? Did you also install Rsn and Csn? Bertus
  20. bertus

    LM3886 amp build

    Hello, So, this is the page you are using: https://www.circuitbasics.com/design-hi-fi-audio-amplifier-lm3886/ Bertus
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