[NJARC] Battery eliminator..."works"

[Al Klase]

Fine business, Steve.

That's most resourceful.  That set will be much happier with a ground.  
Your AC safety ground will do ok.  The ground pin on the outlet is 3/16 
in diameter.

The Sony headset will be louder if you use a step down transformer 
between the tube plate circuit and the 'phones.  (That also keeps HV off 
your head. :-) ) An output transformer from an AA Five would be near 
optimum.  Even a transformer removed from a wall wart would help.  
Impedance matching is like horseshoes or hand grenades, close counts.

Al

On 4/16/2013 12:02 PM, sgt88 at atlanticbb.net wrote:
> Just remember
> Reply = Poster
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>
> _________________________________________________________
> I put "works" in quotation marks because my intial results with my 
> Stewart Warner 305 ( using 201's & 301's ) picks up only the local AM 
> station.
>
> Interestingly...it sounds rather good with my Sony headphones!!
>
> As I turn the 3 tuning knobs, I do get what sounds like an unmodulated 
> carrier...they're spaced evenly apart along the tuning traverse...I 
> don't think there stations...probably some inter-action in the radio 
> of some sort?
>
> Don't have a connection to the 'ground' post...just 1/2 leadin from my 
> antenna to "aerial" post.
>
> Going to listen at night...with a 'ground' to my water line...
>
> Sooooooooooooo...here's my battery eliminator:
> 3 each AC/DC adapter...each at 32VDC @ 2A...cost $1 each at flea market
> 5000 ohm voltage dropping resistor
> 1 each AC/DC adapter 6 VDC @ 2.1A...cost $2.50 at Goodwill ( when they 
> have a 'color' sale...it would be 29 cents. )
> 2 ohm voltage dropping resistor.
>
> Yes...the 3 x 32 VDC are connected in series with a tapoff for my 
> 45VDC using the 5000 ohm resistor...would be 65 VDC without it.
> The 6VDC has the 2 ohm resistor to get 5VDC.
>
> Regards,
> Steve T.
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-- 
Al Klase - N3FRQ
Jersey City, NJ
http://www.skywaves.ar88.net/