On 07/21/2015 06:56 PM, Tothwolf wrote:
I've often wondered why they even bother to put that polarity stripe on modern film parts when it doesn't actually indicate the outside foil terminal. Maybe this is something that has become lost knowledge to manufacturers over the years to the point where even Vishay/Sprague doesn't know what that black indicator stripe was actually used for?
And not so modern parts. I've still got a few pounds of paper-oil capacitors (lots of Rifas) from the 1980s. Picked them up as mixed NOS priced about 25 cents per pound. About half are market with polarity marks. I never understood why.
I used one recently to replace an ignition capacitor in a 40 year old chainsaw (a Stihl 056). Works a treat.
--Chuck
