15uF Air Conditioner caps?

[Chuck H]

A sneeky way to advert 'socool.sg'
Singapore.

Well... I know that things are different from how it use to be. And I sure think the spambot assessment is correct just based on the MO. One IP is from Texas and the other from New Jersey. No east Asian or western European locations.

[Jazz P Bass]

A sneeky way to advert 'socool.sg'
Singapore.

[eschertron]

Possible SPAMBOT same as above. Already posting a link on first post.

Definitely not talking about Tube Amps.

Two first time posters, joined the same day, both talking on a six-year-old thread? Quite the coincidence, I'll say...

[J M Fahey]

My AC cap went bad a few days ago, and now I have to buy a new one. The motor displayed so many problems like not starting, overheating, and vibrating because it was depriving the engine of the total voltage it needs to operate correctly. I noticed that a new one costs from 8$ to 30$. Do you think the price makes a difference with the quality? And is it worth buying a more expensive one. The guys over at socool.sg recommended a MAXRUN 40+5 MFD of 370 or 440 Volt capacitor. Have any of you tried, and is it worth it? I trust them when it comes to ACs, but I'd like to have more options to choose from.

Possible SPAMBOT same as above. Already posting a link on first post.

Definitely not talking about Tube Amps.

[J M Fahey]

Thanks for the information.

SPAMBOT

[tedmich]

FML

[felicityhu]

My AC cap went bad a few days ago, and now I have to buy a new one. The motor displayed so many problems like not starting, overheating, and vibrating because it was depriving the engine of the total voltage it needs to operate correctly. I noticed that a new one costs from 8$ to 30$. Do you think the price makes a difference with the quality? And is it worth buying a more expensive one. The guys over at socool.sg recommended a MAXRUN 40+5 MFD of 370 or 440 Volt capacitor. Have any of you tried, and is it worth it? I trust them when it comes to ACs, but I'd like to have more options to choose from.

[Jinonisie]

Thanks for the information.

[Pdavis68]

I'm not certain, but I think they're actually intended for washing machines and/or dryers. I came across a reference to that when I was researching them, though like I said, I'm not certain. I never really did find an exact match to these.

[Steve A.]

My thoughts are that the capacitor is a "Start" capacitor.

[ATTACH=CONFIG]35883[/ATTACH]

They are meant for intermittent duty.

I agree with you. Compressor run caps are generally in a metal can with 1/4" tabs. This one looks like a start cap and besides the current rating of 2.1A/2.5A is way too low for an AC compressor. (FWIW I was an HVAC service tech for 20 years and an HVAC service manager for 6 of those.)

In any case I think that rating should be adequate for small guitar amps. I think I will order some just for the hell of it.

Steve Ahola

[Mick Bailey]

I've been using motor caps in my Hi-Fi amps for years and never had any problems. Fit and forget.

[Pdavis68]

Well I got an order of them. Looking forward to seeing how they work out.

[eschertron]

Those 15uF caps are quite cheap! They are not small (about 1.5" dia x 3" long) and are probably CBB60 series PP film that will last almost forever. They cost 26X more elsewhere (!) http://www.amazon.com/CBB60-450VAC-P.../dp/B00E1GM2YG

The Ebay supplier linked to Senate testimony about fake electronic components from China, and this sobering video:

It looks like a video of a recycling center?

[tedmich]

Those 15uF caps are quite cheap! They are not small (about 1.5" dia x 3" long) and are probably CBB60 series PP film that will last almost forever. They cost 26X more elsewhere (!) http://www.amazon.com/CBB60-450VAC-P.../dp/B00E1GM2YG

The Ebay supplier linked to Senate testimony about fake electronic components from China, and this sobering video:

[km6xz]

Non-polarized caps will work fine except where space is limited. Not sure where the notion that filters need to be polarized but a capacitance by one type is the same capacitance as from another. There are differences. For example motor caps have a lot higher inductive reactance than electrolytics of the same value of capacitance so you would not want then in high frequency circuits but you are talking about 120 hz, which would be fine. The larger ones use oil as the dielectric between the plates(rolls) which lasts for decades or more. High quality oil caps would last hundreds of years and would only deteriorate if the oil was contaminated or there was a leak. The problem with oil caps include size, cost and limited off the shelf values. Otherwise they are some of the best capacitors made.
Here, we can get oil caps in all sorts of sizes since they were commonly used in both military and consumer products for everything from filtering to coupling and bypassing functions. Another interesting cap found here in industrial surplus is Teflon Capacitors.