[Amps] Multi tube amp

[Carl]

Unless  you wanted an AC/DC PS industrial Step Up/Down transformers were 
very cheap in surplus shops.

The one here Ive used for all sorts of projects is 110/330 or 220/660 at 
about 110# with just thin sheet metal end bells. Lots of this type of stuff 
were scrapped when old mill and other industrial buildings were renovated or 
razed in MA and NH. I bought this one around 67 when I was still at National 
Radio. Im guesstimating at least 5KVA CCS.
No insulation problems even with a quadrupler PS and voltage sag is very 
very low at 1500W RF.

I picked up 3 120/240 or 240/480 more modern ones at a similar place about 
30 years ago and use them to feed 480V to the garage and trailers out back 
so I didnt have to go above 10-3 outdoor UV rated cable to run tools, 
compresors, and welders.

Carl



----- Original Message ----- 
From: <donroden at hiwaay.net>
To: <amps at contesting.com>
Sent: Wednesday, December 06, 2017 10:04 AM
Subject: Re: [Amps] Multi tube amp


> Wasn't that something like 500 volts @ 2 amps ?
>
> Don W4DNR
>
>
> Quoting Roy Koeppe <royanjoy at ncn.net>:
>
>> “Seems to me there was also one in strays that use something like a 
>> dozen 1625’s on parallel...(etc.)”
>>
>> Yes that was my amp – think it had 20 of them with a broad banded  input 
>> and output. I can’t locate the issue so far! Had a photo of it  in 
>> Strays. I used that amp for several years.
>>
>> 73,   Roy    K6XK   Iowa
>>
>>
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