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

["Tesla list" <tesla@xxxxxxxxxx>]

---------- Forwarded message ----------
Date: Tue, 11 Sep 2007 15:39:37 -0500
From: resonance <resonance@xxxxxxxxxxxx>
To: Tesla list <tesla@xxxxxxxxxx>
Subject: Re: 4000 watt Audio Amp to drive Tesla coil (fwd)



Simple.  Just tear the HV winding off a 10 kVA pole pig and rewind with 2 
ought wire, approx 14 turns.  14 VAC at 200 Amps, then use hockey puck 
diodes (surplus) to rectify.  Leave the 220 V. pri in place.


Dr. Resonance

Resonance Research Corp.
www.resonanceresearch.com


----- Original Message ----- 
From: "Tesla list" <tesla@xxxxxxxxxx>
To: <tesla@xxxxxxxxxx>
Sent: Tuesday, September 11, 2007 2:31 PM
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
>
>
>