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  1. bertus

    very high oscillation down copper wire

    Hello, There are some more books with serious stuff from the same series: https://archive.org/details/microwaveandrfdesignvolume1radiosystemsthirdedition https://archive.org/details/microwaveandrfdesignvolume2transmissionlinesthirdedition...
  2. bertus

    very high oscillation down copper wire

    Hello, When you want to dig into the very high frequencies, have a look at this book: https://archive.org/details/microwave-and-rf-design.-vol-5-3ed-2019.-amplifiers-and-oscillators Bertus
  3. bertus

    very high oscillation down copper wire

  4. bertus

    Comedy Thread

    Some more humor: https://www.repairfaq.org/sam/humor.htm
  5. bertus

    vcr head diag

    Hello, What is the brand and type of the VCR? Perhaps you can find some tips on this page: https://www.repairfaq.org/sam/vcrfaq.htm Bertus
  6. bertus

    How can I tell if G24q base is damaged

    Hello, @Bluejets , I know the sockets are difficult. I already had a couple that where so heated by the lamp that they became brown and brittle. Pieces broke off when removing the lamp. Bertus
  7. bertus

    Comedy Thread

    Found at AAC:
  8. bertus

    How to make an hologram

    Hello, @Martaine2005 , Did you read my signature? https://science.howstuffworks.com/hologram.htm Bertus
  9. bertus

    How to make an hologram

    Hello, You can borrow a books on the internet archive: https://archive.org/details/completebookofho00kasp https://archive.org/details/completebookofho0000kasp Bertus
  10. bertus

    very high oscillation down copper wire

    Hello, A lot of RF subjects are given in the ARRL handbook: https://archive.org/details/arrl-1981-radio-amateur-handbook Bertus
  11. bertus

    very high oscillation down copper wire

    Hello, The conductor will have skin-effect on higher frequencies: https://en.wikipedia.org/wiki/Skin_effect Bertus
  12. bertus

    How can I tell if G24q base is damaged

    Hello, It looks like that the G24q base is used with electronic ballasts only: https://blog.1000bulbs.com/home/types-of-sockets It could be that the ballast stopped working. Did the new lamp go in easy and did it hold in the socket? If it did not go in all the way, the dowel may be at the...
  13. bertus

    Stage Line 500W amp repair project

    Hello, The MPSA42 is the part number, the E112 is likely a production code. Bertus
  14. bertus

    How can I tell if G24q base is damaged

    Hello, There are several types of G24 bases. Have a look at this picture: There are 3 different G34q types. Bertus
  15. bertus

    Datasheet for MA2831 regulator

    Hello, The closest to be found is the MA2830. I did find a russian page with a schematic using the chip: http://www.времонт.su/m/ic/mikroshema-ma2831.html Bertus
  16. bertus

    Help identifying component

    Hello, The only one I could find is the E3S: E3S XC6121A524MR-G Torex Semiconductor SOT-25 Voltage detector IC 2.4V±2%, -Reset ODO, +WDEN, Wt=400ms, Rt=3.13ms Bertus
  17. bertus

    ID and Source Microswitch

    Hello, What you are showing is a tacticle switch. They come in many sizes and shapes...
  18. bertus

    Removing ground cable off mini servos?

    Hello, The motors used in the video are not servos. The are turning constant when the power is applied. Servos would go to a fixed position and stop. Bertus
  19. bertus

    Buzzing Makita DC1414 F charger

    Hello, When you change the fourrier size and look at the spectrum, the 100 Hz is good visible: You will also see signals at 4000, 8000 and 12000 Hz. Bertus
  20. bertus

    Removing ground cable off mini servos?

    Hello, It looks like there are slow running motors used for the spring to turn. They could be motors witha gearbox mounted. You probably mean RC servos, like on this wiki page: https://en.wikipedia.org/wiki/Servo_(radio_control) The motors are not servos, as servos would move between positions...
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