FET Preamp Circuit for "One Tube Wonder" Talking-Book Machine from 1949.

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  • Опубликовано: 21 янв 2025

Комментарии • 18

  • @BrianG-x4u
    @BrianG-x4u 3 дня назад +1

    Thx Brian for showing us that interesting history of the talking book machine ❤.

  • @bigalsmallengines
    @bigalsmallengines 3 дня назад +1

    Cheers radiotvphononut! A great video about making
    a pre-amp for those low volt cartridges. Good knowledge
    shared about the different circuits and a good history of
    some of the players and the differences. Enjoyed the
    whole video!!! Big Cheers!!! 🍻

  • @jimnewman5596
    @jimnewman5596 2 дня назад

    That was a great video on the talking book machine. I went through a Voice of Music Record Player Model 321 1966 one tube 25EH5 a couple of years ago and it works well but has low volume. I plan on putting the preamp that you were nice enough to create and share in it to boost the volume.

  • @daleburrell6273
    @daleburrell6273 3 дня назад +2

    2:55...the 2 transistors are connected as "darlington pair" circuit- and THAT configuration has a VERY high input impedance...

  • @ralphj4012
    @ralphj4012 20 часов назад

    Well done. I imagine a 10 meg z-taper (similar to a conventional log) pot, especially with a switch, is as rare as hen's teeth. I was surprised tapping off the cathode bias (for the FET supply) worked properly, but I have no skills in these designs.

  • @markmarkofkane8167
    @markmarkofkane8167 3 дня назад +1

    I have a battery operated and AC portable solid state record player made in the 60's . I bought it off of eBay, because it was like the one I played when I was little. The AM Radio was fine. The phono was barely audible. I concluded the cartridge was bad. Bought a stereo cartridge off of eBay. I rigged it to fit. It was loud. I only used one channel, but it didn't matter, because I wanted to play my mono 45's. I was pleased it worked so well. The one tube wonders must have required 3 volts, while my portable worked with much less. I don't know what the cartridge outputs, but its supposedly a new cartridge from China. Your repair videos gave me the knowledge and confidence to try to fix my phonograph

    • @markmarkofkane8167
      @markmarkofkane8167 3 дня назад

      Thanks for clearing that up about the Places in the heart movie. I assumed it was accurate. But I didn't know the difference.

  • @williammoore2982
    @williammoore2982 3 дня назад +2

    damn snail mail !

  • @williammoore2982
    @williammoore2982 3 дня назад +3

    Bring back Radio Shack !!!

  • @markmarkofkane8167
    @markmarkofkane8167 3 дня назад

    Sound quality: Best, Good, Fair with those cameras. This is listening with my smartphone.

  • @bountyhunter4885
    @bountyhunter4885 3 дня назад +1

    The Fuji camera has a more sensitive audio microphone. The Canon wirh slightly better image and sound. The Kodak having the clearest image but quietest background sound pickup. Imo.

  • @ToneHobart
    @ToneHobart 2 часа назад

    I have an A-76

  • @larryshaver3568
    @larryshaver3568 3 дня назад

    a 2 mil stylus would work for the older record

  • @daleburrell6273
    @daleburrell6273 3 дня назад

    ...from what I can see of the transistor circuit- I can't understand why it wouldn't work- maybe you got stuck with bad parts...(?)

  • @Chattanoogachoochoo_0105a
    @Chattanoogachoochoo_0105a 3 дня назад +1

    What happen to the new camera!
    WOOF...WOOF!

    • @danhorton6182
      @danhorton6182 3 дня назад +3

      He mentioned that he had videos shot with the old camera that still needed uploaded.

  • @daleburrell6273
    @daleburrell6273 3 дня назад

    ...don't hold hold your breath...