Saltwater Caps

Hi Guys,

A friend and myself are planning a small, low cost TC project.  When
specifying caps for the lab I usually take the maximum peak to peak voltage
and multiply that by 2.5 to get the  DC working voltage for the cap I need.

If I am using saltwater caps where the glass wall thickness is 0.125 inches
and the puncture voltage is about 200 volts per mil, then the 125 x 200 =
25kV.  Derating by 2.5 gives a working voltage of about 10 kV for the peak
to peak voltage or about
7 kV RMS.

Is this the correct approach?

Also, is the output voltage on an oil burner ignition transformer the RMS or
peak to
peak value?


Harry Adams
Registered ICC User
INTRANET Technologies Inc
check out http://www.intranet.on.ca