Re: [TCML] Suitable MMC Capacitors

[DC Cox <resonance@xxxxxxxxxxxx>]

The Fair Radio caps are DC filter caps.  If you buy them and then they blow,
you are out your money plus more money to replace them.

Use MMC type caps.  They are proven, will work, and won't fail like the DC
filter caps will.

Just offer to wax a neighbor's car for $20.  Two cars and you have $40 and
you can buy the inexpensive MMC caps.  Car washing and waxing are just two
methods you can use to make some money to buy the caps you really need for
this project.

Cutting corners on caps will just give you failure and it's not worth the
headache.

Dr. Resonance




On Sun, Dec 6, 2009 at 11:47 AM, Paul Brodie <pbbrodie@xxxxxxxxxxxxx> wrote:

> That is the correct list I was telling Brandon about but it is going to be
> of little help.
> Brandon, you are not building the type of MMC that is usually being built
> by other TC builders.
>
> For everyone to understand what is going on, I was attempting to help
> Brandon find some caps to use to build a tank cap as inexpensively as he can
> and still work with his 15kV 30mA neon sign transformer, as he is on a very
> tight budget. The caps we are looking at are only selling for 3 for $12. I
> located these caps at Fair Radio for him that are rated .01uF at 10kV. He
> wants to use 4 in series to get .0025 at 40kV and put together 3 strings of
> these to get .0075 at 40kV. I actually recommended 3 strings of 3 caps to
> get more capacitance, .01uF at the lesser voltage of 30kV, but he wants the
> extra voltage rather then the extra capacitance and says they will fit his
> budget. JavaTC recommends .008uF for his setup and I have always gone with a
> little bit more capacitance rather than less when given the choice. If he
> had the money, I would actually prefer he went with 4 strings of 4 caps to
> get .01uF at 40kV but I suppose that is immaterial.
>
> So has anyone got any advice for us, taking into consideration that the
> usual Cornell Debilier caps are out of the question due to cost. If you make
> a recommendation, please try to keep the cost under about $50 for the caps.
> That has been a very stiff requirement for me to meet, so far. Thanks
> everyone.
> Paul
> Think Positive
>
> ----- Original Message ----- From: "bartb" <bartb@xxxxxxxxxxxxxxxx>
> To: "Tesla Coil Mailing List" <tesla@xxxxxxxxxx>
> Sent: Saturday, December 05, 2009 4:03 PM
> Subject: Re: [TCML] Suitable MMC Capacitors
>
>
> This document is a bit old, but the only one I know of.
>> http://www.classictesla.com/hot-streamer/TeslaCoils/MMCInfo/good-bad.txt
>>
>> Take care,
>> Bart
>>
>> Brandon Hendershot wrote:
>>
>>> I've heard rumors of a list in the archives consisting of caps known to
>>> work well in MMC's, and caps known NOT to be used in MMC's. I was
>>> unsuccessful in finding this list. If one of you could give a link to the
>>> post if you wouldn't mind. I'm trying to check up on these;
>>> https://www.fairradio.com/catalog.php?mode=viewitem&item=5330
>>> They're 'Dearborn 430P'. 3 for $12.00 isn't bad at all if they will
>>> work...
>>>
>>> _______________________________________________
>>> Tesla mailing list
>>> Tesla@xxxxxxxxxx
>>> http://www.pupman.com/mailman/listinfo/tesla
>>>
>>> _______________________________________________
>> Tesla mailing list
>> Tesla@xxxxxxxxxx
>> http://www.pupman.com/mailman/listinfo/tesla
>>
>
> _______________________________________________
> Tesla mailing list
> Tesla@xxxxxxxxxx
> http://www.pupman.com/mailman/listinfo/tesla
>
_______________________________________________
Tesla mailing list
Tesla@xxxxxxxxxx
http://www.pupman.com/mailman/listinfo/tesla