Re: High Voltage Transformer

["Tesla list" <tesla@xxxxxxxxxx>]

Original poster: NuclearFirestorm@xxxxxxx 

The cap I'm charging is a 225 uF 15kV cap.  It will have a 5 MOhm energy 
dissipation resistor, 500W 5 kOhm current limiting resistor, and a string 
of balanced diodes to perform half-wave rectification.  The input power 
will come from a 110 input 0 to 130 Volt out variable transformer.  The 
variable transformer is to be raised at a certain rate to keep the power 
from being initially too high.   The circuit has been designed and 
simulated in pSpice.  I believe the charge time was 20 or 30 seconds, I 
forgot the exact number.  The only missing part was a transformer.

Thanks.

In a message dated 3/2/2005 9:25:07 PM Eastern Standard Time, "Tesla list" 
<tesla@xxxxxxxxxx> writes:

>Original poster: BunnyKiller <bunikllr@xxxxxxx>
>
>what you probably are looking for is a 5KVA distribution transformer that
>has a 120 "secondary" and a 14KV input... this should give you pleanty of
>power to charge the cap set...  even a 240 "secondary" with a 14KV input
>should  charge the caps in a relativatly decient time frame...   but you
>will need some type of ballast to keep the current to 20 A at 120 vac....
>
>have you done the math to determine the charge rate of the caps and is
>there a specific time duration needed to charge them??  is the time between
>"recharges" rapid or is it more of a single pulse discharge on the caps and
>"it really doesnt matter" if it takes a couple of seconds to recharge type
>of situation??
>
>it would help if you could supply us with the application you have in mind
>for your "system"
>
>alot of knowledge resides on this list ...  :)     give us some specifics
>and we may just be able to tell you EXACTLY what you need and where to find
>it ...  who knows  maybe one of us has such a trannie sitting on a work
>bench collecting dust that needs a new home ....
>
>Scot D
>
>
>
>Tesla list wrote:
>
>>Original poster: NuclearFirestorm@xxxxxxx
>>Hello,
>>
>>I'm looking for a transformer and have had trouble finding what I'm
>>after.  I need a transformer with the following specs.
>>
>>Primary: 120 V
>>Secondary: 10 kV (anything a little higher is okay)
>>Power: around 2.5 kVA
>>
>>This is not for a tesla coil, it will be part of a capacitor charging
>>power supply.
>>
>>If anyone can point me to a distributor that offers this kind of
>>transformer I would be very grateful.
>>
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