Re: New Coil

["Tesla list" <tesla@xxxxxxxxxx>]

Original poster: "Paul B. Brodie" <pbbrodie@xxxxxxxxxxxxx>

Gerry,
My 2 Maxwells measure 30.4nF and 30.0nF on my DMM. I haven't checked 
anything else.
Paul
Think Positive

----- Original Message -----
From: "Tesla list" <<mailto:tesla@xxxxxxxxxx>tesla@xxxxxxxxxx>
To: <<mailto:tesla@xxxxxxxxxx>tesla@xxxxxxxxxx>
Sent: Sunday, May 01, 2005 9:14 PM
Subject: Re: New Coil

> Original poster: "Mike" 
<<mailto:mike.marcum@xxxxxxxxxxxx>mike.marcum@xxxxxxxxxxxx>
>
> Not the leakage, but it was still .03 uF before took it apart. Each section
> (before I unrolled them, looking for holes/burns) was .06 uF.
>
> Mike
> ----- Original Message ----- From: "Tesla list" 
<<mailto:tesla@xxxxxxxxxx>tesla@xxxxxxxxxx>
> To: <<mailto:tesla@xxxxxxxxxx>tesla@xxxxxxxxxx>
> Sent: Sunday, May 01, 2005 8:06 PM
> Subject: Re: New Coil
>
>
>>Original poster: "Gerald  Reynolds" 
<<mailto:gerryreynolds@xxxxxxxxxxxxx>gerryreynolds@xxxxxxxxxxxxx>
>>
>>Wow!  Didn't know the maxwells were good for that much current.  Doesn't
>>sound like a current spec failure, although a defect (I suppose) could
>>result in a current failure.  Have you tried to measure capacitance and
>>leakage.
>>
>>GerryR
>>
>>>Original poster: "Mike" 
<<mailto:mike.marcum@xxxxxxxxxxxx>mike.marcum@xxxxxxxxxxxx>
>>>
>>>Finished dissecting the one with the crack. Tomorrow I'll post pics with
>>>desciptions tomorrow, need to get a shower and take a nap. I was quite
>>>surprised that these ARE designed like the 942C's with 2 sets of foil and
>>>a strip of metal film in the middle. 8 sections each about the size of a
>>>hershey bar. Connected in 4 sets of 2 parallel with lead clad copper
>>>strip and 3 layers of fish paper/2 layers of hdpe plastic seperating the
>>>sections. Only damage I could find was 1 of the connections between the
>>>sections was kinda loose compared to the others, which means too much
>>>peak current at one point. The weak connection heated up till the oil
>>>expanded and popped the case I guess. Had to have been from previous use
>>>as I don't see how I could hit over 25kA peak (40kA dead short with just
>>>a straight piece of wire)/25A rms with the mediocre-sized coil I was
>>>using. Oh well, hit or miss I guess, still better than buying new for
>>>$600 a pop. Have 3 others I might trade in for the 942C's ($115 worth to
>>>equal a maxwell, except 1300Apk instad of 25000 Apk rating, and new).
>>\
>>
>>
>>
>
>
>
>