Just noticed that one of the the subject ignition noise supression
capacitor's lead has broken off it right at the cap body leaving it dangling
near the ignition pack. Not apparent that it's failure has effected either
ignition or radio perfromance though.
Anyone know the specs (capacitance and voltage rating) of this item? Being
an inherently cheap ham radio operator with a huge collection of electronic
flotsam and jetsam, I'm sure I have something hanging around that will
function as good or better than the Ford part.
I'd think that would be 'duck soup' for a 'HAM'. Just off the top of your
Voltage would be at least 10 times Primary. Then figure reactance v
impedance of the 'L' circuit... against freq range of desired band you wish
It's been 20 years...but I would guess .1 to .5ufd at 200v paper or ceramic
But isnt it easier to just head out to an auto parts store and buy one off
the 'Help" rack?
Okay...I have an idea. Try a regular points-type 'condenser'. I had an
ign noise problem that showed mainly on the lower AM dial and it worked for
me (installed on coil + term). If you need more (higher) than that.. just
a regular .1ufd disc at 100 volts or more in parallel with the above ought
to do it.
just a tip for some,
Most point type ignition "condensers" were the same value as the external
"capacitor" on Ignition coils and voltage regulators (or elsewhere in the
system. I recall specs from when I was in high school automotive class but that
~30 years ago.
You're a Ham, I'm an antique radio collector. We both "should" know how to
the proper voltage and MFD for this cap! I know I can't ;( I'm thinking 1-10
about 600v. Non electrolytic, non polarized, off the top of my head. I've used
that range for radio supression on aftermarket installs..
600V!!! Come on, Tom... look at AC RFI/anti-arc filters!
The classic: series circuit, 100ohm 1 watt, point one ufd 400v disc
And that's for inductive circuits at 120 volts.
You only need design for 10 times primary voltage. less if you're also
using the points cap in parallel.
I said 600V beacuse that's normally have in my stash. I do a lot of work with
circuits. The 1-10 mfd was a typo. I meant .1-1.0. I normally have a lot of .1
on hand. The OP was looking to use something out of his junk box.
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