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24.17.164.100
Here's a seller that provided low-cost $3.50 USPS First-Class Mail delivery for a low-quantity X2 capacitor order. A total cost of $7.50 including shipping for a quantity of four X2 capacitors for a recent DIY power line distributor project is a good thing. Part number RM121PF04 Topmay 0.1µF 275VAC metallized polypropylene X2 safety interference suppression capacitor to place across live and neutral of each AC outlet installed in a multiple-outlet power line distributor.
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I've installed the Topmay 0.1µF 275VAC metalized polypropylene X2 safety interference suppression capacitors placed across the live and neutral of each AC outlet installed in the mentioned multiple-outlet power line distributor, and very much like what I hear. The proverbial blacker background is readily apparent with an overall cleaner sounding presentation from top to bottom, and improved macro and micro dynamic contrasts. Well worth the buck per each spent. Burn-in might bring a marginal level of sonic betterment (if not, I'm very pleased as it is).
Yes, it is a very well known tried and true tweak. I'm glad you posted it for us, being real.
Thanks
Digi-Key has no minimum order, and an 8oz package ships for about $2.50
http://dkc3.digikey.com/PDF/US2011/P1884.pdf
X and Y rated 0.1µF from about $0.41 (Panasonic) or $0.38 (CDE).
When did they change that policy? I almost always use Mouser cuz of the (now old?) policy of $25 minimum. Thanks.
ET
Thanks for the heads-up, djk.
across switches also to supress turn on noise?
Good source though and thanks for passing it on.
Sure they can, it's called a sparking capacitor/snubber. But the exact amount of capacitance required is something you have to determine empirically. I've done it, tried a small value capacitor and added additional capacitance until the turn on thump went away.
Thanks for the guidance. May experiment since I'm in the same state and parts are cheap.
Thanks for the post. No minimum charge is a BIG plus. I don't
know your application but I'd go for a higher voltage is you
are putting this across 120 volt circuit.
Regards to all,
John
275VAC is suitable for a 120 volt circuit.
Kind of expensive for a little capacitor. You could get it much cheaper at a surplus electronics parts store. Here is a picture of my little cap and plug assembly ready to be plugged into any wall outlet/receptacle. I prefer a higher voltage.
If it is not X rated then it should NOT be placed directly across an AC line.
Class X is for applications where failure could not lead to electric shock (hot to neutral). Class X1 capacitors are intended to operate safely even in the presence of spikes on the mains supply of up to 4 kV (installation category 3 or overvoltage category 3 according to IEC60664), which are normally industrial supplies, but some standards call up class X1 capacitors if they are connected directly to the mains supply upstream of the equipment fuse, irrespective of the type of mains supply. Class X2 capacitors are intended to operate safely even in the presence of spikes on the mains supply of up to 2.5 kV (installation category 2 or overvoltage category 2 according to IEC60060), which are normally residential, commercial and light industrial supplies. X capacitors can be found from 0.001 uF to at least 10 uF and are only made in film.
Thanks.
A low-quantity order (with no minimum purchase amount) and a low-cost shipping option is my point. Surplus sellers tend to have a minimum purchase amount (such as $15) and product offerings tend to be for lots of 20 or so, with no price per each option.
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