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)
Mouser, DigiKey and possibly Antique Radio Supply
-- Tim Wescott Control systems and communications consulting http://www.wescottdesign.com Need to learn how to apply control theory in your embedded system? "Applied Control Theory for Embedded Systems" by Tim Wescott Elsevier/Newnes, http://www.wescottdesign.com/actfes/actfes.html
Found a 2.5mH choke at AES Cat # P-C1535B
bottom)
What type gauge wire should I use SWG or AWG?
bottom)
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.
Could I use 30 gauge silver plated insulated kynar wire for the non litz coils? I can get this from the 1N34A.com site too.
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.
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.
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.)
2.5
on
m -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 #30.
Mike
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 #28.
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