I was hoping they would be good for Tesla coil use, since I wanted to make one. As Fabio stated, they have other uses. These were originally meant for X-Ray machines. They were used in voltage multiplier circuits going up to about 200KV.
If anyone has use for any of these, please let me know off-list and I can send a photo.
Skip
-----Original Message-----
From: Fabio Bragonzi.it <mcggyver@xxxxxxxxxx>
Sent: Tuesday, November 12, 2024 7:22 AM
To: tcml@xxxxxxxxxxxxxxx
Subject: [TCML] Re: Polypropylene vs Metalized Polyester
Hello All.
Even if these capacitors aren't suitable for Tesla coils, hundreds of 33nF 15KVdc MKT can be used for other HV devices such as:
- Cockcroft Walton voltage multipliers.
- Marx generator
- storing HVdc energy
- pulsed HVdc devices (few pulses per seconds max)
- X-ray machines
On 12/11/2024 02:40, skip@xxxxxxxxxxxxxxxxxxxxxx wrote:
> Gary,
> I was afraid of that. I was hoping they might be useful since I came into possession of a few hundred of these.
>
> Skip
>
> -----Original Message-----
> From: Gary Lau<glau1024@xxxxxxxxx>
> Sent: Monday, November 11, 2024 7:03 PM
> To: Tesla Coil Mailing List<tcml@xxxxxxxxxxxxxxx>
> Subject: [TCML] Re: Polypropylene vs Metalized Polyester
>
> Unfortunately, polyester, a.k.a Mylar, is not a suitable dielectric for Tesla coil tank circuits, it is too lossy and will overheat and fail in short order. Polypropylene is what you want.
>
> On Mon, Nov 11, 2024 at 6:59 PM<skip@xxxxxxxxxxxxxxxxxxxxxx> wrote:
>
>> I have seen that polypropylene is the best choice for Tesla coils.
>> What would be the comparison with Metalized Polyester.
>>
>>
>>
>> I have "inherited" a good quantity of Metalized Polyester caps from
>> Wesco at .033uF / 15KVDC. Would these be good tor Tesla Coil use?
>>
>>
>>
>> Skip
>>
>>
>>
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