Possible MMC?

• To: tesla-at-pupman-dot-com
• Subject: Possible MMC?
• From: "Andy Cleary" <gemware2-at-dreamscape-dot-com> (by way of Terry Fritz <twftesla-at-uswest-dot-net>)
• Date: Sun, 14 May 2000 11:07:11 -0600
• Approved: twftesla-at-uswest-dot-net
• Delivered-To: fixup-tesla-at-pupman-dot-com-at-fixme

	I am planning on building an MMC capacitor for my new Tesla Coil, and I
came across the following on the capacitors-dot-com web site.  It seems pretty
good to me, with fairly high voltages and larger capacitance values.  The
following is a quote directly from their web site.  Since I am not too
knowledgeable about the specific ratings, and what is best for coiling, I
was hoping someone could give me a good run-down on these.

Series PPMT
AudioCap Metalized High Voltage Capacitor PPMT

The PPMT AudioCap capacitors are metalized polypropylene, available in
voltages high enough to be ideal for all high-voltage applications, such as
power supplies for tube electronics, high-voltage bypassing, high-voltage
coupling and electrostatic loudspeaker crossovers. They exhibit excellent
electrical and environmental characteristics, and will provide high quality
performance and long life at a reasonable price. The gold-plated OFHC leads
provide long-term high reliability, superior to silver wires, owing to gold’
s non-oxidizing properties.
Capacitance Values:  .10 to 2.0 mfd
Tolerances:  +/- 10%. Also: 5%, 2%, 1%
Working Voltages:  1000, 1500 V: 2400V; call for information on lower
voltages
Test Volts:  2.0 x rated voltage for one minute.
Dissipation Factor:  < 0.05% 1.0 - 10.0 mfd -at-1kHz -at- 25o C
< 0.05% > 10.0 mfd -at- 120 Hz -at- 25o C
< 0.03% .1 - 1.0 mfd -at- 1kHz -at- 25o C
< 0.02% .001 - .1 mfd -at- 1kHz -at- 25o C
Insulation Resistance: >300,000 megohm/mfd
Operating Temperature Range: - 55o C to 105o C
Temperature Coefficient: See Capacitance Change vs. Temperature Chart
Life Tests: Rated voltage -at-85 degrees C for 1000 hrs.
Vibration: Will Meet Mil-C 19978B
Lead Material: Gold-plated OFHC

Thank You,

Andy Cleary

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