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Author Topic: I just saw the damndest thing...  (Read 4116 times)
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W7TFO
WTF-OVER in 7 land Dennis
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IN A TRIODE NO ONE CAN HEAR YOUR SCREEN


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« on: December 09, 2009, 04:21:52 PM »

Some guy was using a bank of 8 automotive ignition coils (like the one on your 65 Chevy Grin) as an output match from a single big pentode to a speaker.  Seemed to work OK as an autoformer.

They were in a parafeed with a blocking cap arrangement. 

Bandwidth notwithstanding, this could be the answer to the shortage of cheap mod transformers, and would cut down on a lot of unnecessary driving in the neighborhood.... Lips sealed
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Just pacing the Farady cage...
KC4VWU
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« Reply #1 on: December 09, 2009, 09:40:02 PM »

Sounds interesting. I was wondering what I could do with all those Accel Supercoils I had lying around here...

Phil
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KD6VXI
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« Reply #2 on: December 09, 2009, 10:10:36 PM »

I can't wait to see the first person's mockup Smiley

--Shane
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W7TFO
WTF-OVER in 7 land Dennis
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IN A TRIODE NO ONE CAN HEAR YOUR SCREEN


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« Reply #3 on: December 10, 2009, 12:31:40 PM »

Here is a YouTube link to see it running:

http://www.youtube.com/watch?v=80pIK_fcA_U

I have a slug of those tubes, amps to come later.

Dennis

When you need a real musical laugh, try this:

http://www.youtube.com/watch?v=0lNFRLrP014
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KB5MD
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« Reply #4 on: December 10, 2009, 12:40:04 PM »

Gotta grow my hair out like that.....well I'd have to comb the sides up alot. Grin
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ke7trp
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« Reply #5 on: December 10, 2009, 06:31:25 PM »

Pretty Cool find Dennis.  I see the car audio amp and 1.5 farad Cap as the Driver. 

C
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W7TFO
WTF-OVER in 7 land Dennis
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IN A TRIODE NO ONE CAN HEAR YOUR SCREEN


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« Reply #6 on: December 10, 2009, 07:46:11 PM »

I bet that fat Farad job is for DC on the filament.

dg
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KC2IFR
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« Reply #7 on: December 10, 2009, 08:27:13 PM »

Thanks for the link.....
That band is VERY good........u just have to "get it".
Laughed my ass of watching some of there other videos.
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