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Regenerative Radios (Again!)

Discussion in 'Electronic Basics' started by Dave.H, Mar 15, 2008.

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  1. Dave.H

    Dave.H Guest

    I've found a suitable regen radio circuit that only runs off 12
    volts. I've already decided to buy a regen radio using a #30 tube off
    Dave Schmarder, but the fun is in building them. The only problem is
    the 2.5 mH RFC, I can get a 27 mH unit off Dave's web store, is there
    any reason to think that would work?

    Radio Page (schematic's at the bottom)
  2. Tim Wescott

    Tim Wescott Guest

    Mouser, DigiKey and possibly Antique Radio Supply (
    should all have something that'll work. Even surplus places like All
    Electronics and MP Jones & Associates may be of help.

    Tim Wescott
    Control systems and communications consulting

    Need to learn how to apply control theory in your embedded system?
    "Applied Control Theory for Embedded Systems" by Tim Wescott
  3. Dave.H

    Dave.H Guest

    Found a 2.5mH choke at AES Cat # P-C1535B
  4. Dave.H

    Dave.H Guest

    What type gauge wire should I use SWG or AWG?
  5. Dave.H

    Dave.H Guest

    How much feet of wire would I need for each coil? I need to know this
    so I can buy the litz from Dave Schmarder.
  6. Dave.H

    Dave.H Guest

    Could I use 30 gauge silver plated insulated kynar wire for the non
    litz coils? I can get this from the site too.
  7. Do the arithmetic. Pi * Coil diameter * turns count gives wire length.
    Litz wire is nasty to terminate, so I wouldn't bother. The difference
    between litz and plain old magnet wire might not even be observable in
    this application.
  8. Dave.H

    Dave.H Guest

    I didn't think so. I wasn't to keen in using litz wire. Magnet wire
    is my preference. I do not know what Pi * Coil diameter is.
  9. Dave.H

    Dave.H Guest

    Since I can't find 30 gauge wire for the two smaller coils, I will
    probably use 28 gauge. I'm assuming 200 feet is more than I need (AES
    sells the wire in 200 foot spools.)
  10. Mike Silva

    Mike Silva Guest

    You absolutely do not need litz wire for BC band. In fact, excessive
    Q will lower your audio quality by diminishing the highs.

    Even Radio Shack sells a bag of 3 sizes of magnet wire, #22, #26 and

  11. Dave.H

    Dave.H Guest

    I can't seem to find a source for #30 wire, neither Dick Smith or
    Antique Electronic Supply stocks any, so I'll probably have to use the
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