Re: 4000 watt Audio Amp to drive Tesla coil (fwd)

["Tesla list" <tesla@xxxxxxxxxx>]

---------- Forwarded message ----------
Date: Tue, 11 Sep 2007 21:39:13 -0500 (GMT-05:00)
From: gary350@xxxxxxxxxxxxx
To: Tesla list <tesla@xxxxxxxxxx>
Subject: Re: 4000 watt Audio Amp to drive Tesla coil (fwd)

I have not read any of these posts yet so I have no idea what it is about.  
The subject line, "4000 watt Audio Amp to drive Tesla coil." gave me an
idea.

When I was in college I built some electro static speakers about 1974 or
1975.  That was so long ago I don't remember much other than the speakers
worked on high voltage producing sound by repelling a surface because of
the HV static charge.  The idea just came to me, wonder if you can
modulate the tesla coil and play music over the sparks and streamers.  
Would a 5KW TC produce 5KW of music and sparks? That would be cool a Tesla
Coil musical concert with sparks and arcs.  When I was in college I was a
long hair hippy freek, a bag of weed, a bottle of wine and a musical tesla
coil would be far out, groovy man, I'm hip.  LOL..






-----Original Message----- >From: Tesla list <tesla@xxxxxxxxxx> >Sent: Sep
11, 2007 2:31 PM >To: tesla@xxxxxxxxxx >Subject: Re: 4000 watt Audio Amp
to drive Tesla coil (fwd) > > >---------- Forwarded message ----------
>Date: Tue, 11 Sep 2007 10:11:36 EDT >From: FIFTYGUY@xxxxxxx >To:
tesla@xxxxxxxxxx >Subject: Re: 4000 watt Audio Amp to drive Tesla coil
(fwd) >
> 
> 
>In a message dated 9/11/07 9:31:15 A.M. Eastern Daylight Time,  
>tesla@xxxxxxxxxx writes:
>
>>   Soooooooo, how and where in the world do I get a  source of 200 constant 
>amps at 13.8 volts? This >is not your average power  supply you can plug into 
>a wall.
>
>    Depends on your plug.
> 
>    If you plug it into a 30A 220V single-phase dryer  receptacle, 4kW should 
>be no problem.
> 
>    You can use a "buck/boost" transformer in an  isolating configuration 
>(added bonus!) to get low voltage/high current AC, then  rectify. Big diodes are 
>relatively cheap. You could use phase-controlled SCRs to  help regulate the 
>average voltage, but it makes a brutal mess of an output  waveform when you need 
>*clean* DC. This is what we've done to make 12V DC at  1500 amps for 
>electrolysis cells. 
>    Filtering will depend on your needs. Maybe you can  wind your own big 
>choke on some scrap iron to save on filter cap expenses, as  you'd be looking at 
>a lot of very big, very robust caps. But suitable choke  design is 
>*non-trivial*.
>    The MG set approach would be fine, using multiple  car alternators, but 
>the problem is finding a 5 or 7-1/2 HP *single-phase*  motor. 
>    In this kind of application, polyphase AC is your  friend. Maybe run a 5 
>HP 3-phase motor as a rotary phase convertor, then use it  to drive the car 
>alternators? You might be able to rectify directly from  the  other two motor 
>legs (probably the cheapest and simplest approach,  worth a shot to try first?). 
>You might be able to scrounge up an old 5 or 10 HP  3-phase motor that has a 
>broken or irreparable shaft for cheap (scrap metal). 
>
> 
>-Phil LaBudde
>Center for the Advanced Study of Ballistic  Improbabilities
>
>
>
>************************************** See what's new at http://www.aol.com
>
>