Hi all!!! I have this filter capacitor. It's a "BIANCHI" 50uF capacitor. As you can see on the photos, it has 3 outputs and one pin. I want to ask you: Which is the positive and which the negative output (pin) of the capacitor? It has 3 outputs and it's strange.It should have 2 outputs. I have only seen that a filter capacitor with 2 capacitors inside has 3 outputs.

 

I see a plus sign on the first photo so that might be a hint.

 

What exactly is printed on the side of the can? Capacitors do not have an Output. If it is a dual capacitor one pin is common and the others are capacitors to the common. The odd pin may just be a can ground and the remaining two pins a single capacitor. I was able to read AC so it is likely a motor start capacitor. That being just a guess as your image lacks detail on the text stamped on the can.

Ron

 

What exactly is printed on the side of the can? Capacitors do not have an Output. If it is a dual capacitor one pin is common and the others are capacitors to the common. The odd pin may just be a can ground and the remaining two pins a single capacitor. I was able to read AC so it is likely a motor start capacitor. That being just a guess as your image lacks detail on the text stamped on the can.

Ron

The capacitor is single filter capacitor for sure (As the seller has told me and as I've resulted). It is printed "BIANCHI AC 6010/50 50μF 450V 70oC" but is has 3 outputs. the one with the pin doesn't has any mark. The two others have one triangle and one square symbol.

 

What does the top of the can say??

Here is a photo of another Bianchi. It would help if you posted the part number rather than that poor phot.

 

What does the top of the can say??

Here is a photo of another Bianchi. It would help if you posted the part number rather than that poor phot.

View attachment 137289

The capacitor is single filter capacitor for sure (As the seller has told me and as I've resulted). It is printed "BIANCHI AC 6010/50 50μF 450V 70oC" but is has 3 outputs. the one with the pin doesn't has any mark. The two others have one triangle and one square symbol.

 

How do you know for sure it is a single capacitor filter?? I would not put much faith in what the seller says if they cn't identify the pins for you.

How old is this thing? I can't even find a company called Binachi. Do you have a schematic on where it came from?

 

I am seeing a triangle and a square on the bottom of the can in your third photo just like in the photo I posted of the top. I bet this is a dual capacitor. Post a photo of the top of yours.

 

I can understand clearly myself from the mark I said "BIANCHI AC 6010/50 50μF 450V 70oC" that it's a single capacitor. Also, this thing is new. The seller which is a trusted electrician gave me two of this, to replace my faulty dual filter capacitor.

 

I am seeing a triangle and a square on the bottom of the can in your third photo just like in the photo I posted of the top. I bet this is a dual capacitor. Post a photo of the top of yours.

There's nothing on the top.

 

One more time, capacitors do not have "outputs". They can have leads or terminals but they do not have outputs. Based on what you say if it is just a single can my guess is the odd pin is just a can ground and the remaining two pins are the 50 uF terminals. Since it is an AC capacitor there is no polarity.

Additionally as an AC capacitor it is not the type of capacitor used as a filter cap. It looks to be a motor starter capacitor commonly found in for example air conditioner compressors.

Ron

 

I can understand clearly myself from the mark I said "BIANCHI AC 6010/50 50μF 450V 70oC" that it's a single capacitor. Also, this thing is new. The seller which is a trusted electrician gave me two of this, to replace my faulty dual filter capacitor.

Then why are you asking here? Why don't you ask your "trusted electrician"? Why are you trying to replace a dual cap with a single cap? Why are you using some unknown ancient cap as a replacement?? There are plenty of other sources out there.

 

One more time, capacitors do not have "outputs". They can have leads or terminals but they do not have outputs. Based on what you say if it is just a single can my guess is the odd pin is just a can ground and the remaining two pins are the 50 uF terminals. Since it is an AC capacitor there is no polarity.

Additionally as an AC capacitor it is not the type of capacitor used as a filter cap. It looks to be a motor starter capacitor commonly found in for example air conditioner compressors.

Ron

I am guessing the AC is a part number or something. Hard to really tell with that photo.

 

Why are you trying to replace a dual cap with a single cap? Why are you using some unknown ancient cap as a replacement??

Oh I get it you bought too. Are you sure it will fit?

 

I see only one terminal. I would have to assume that the case is the other terminal.

Do you have an analog test meter that can measure resistance?

Try to measure resistance between the terminal and the case. The needle of the meter should give a kick before settling back to high resistance. Reverse the leads and test again. The needle should do the same thing again.

 

I see only one terminal. I would have to assume that the case is the other terminal.

Do you have an analog test meter that can measure resistance?

Try to measure resistance between the terminal and the case. The needle of the meter should give a kick before settling back to high resistance. Reverse the leads and test again. The needle should do the same thing again.

That third photo does look like there is just a whole in the one position and no actual terminal.

 

I see only one terminal. I would have to assume that the case is the other terminal.

Do you have an analog test meter that can measure resistance?

Try to measure resistance between the terminal and the case. The needle of the meter should give a kick before settling back to high resistance. Reverse the leads and test again. The needle should do the same thing again.

Now that you mention it... Looking close it does look that way, leaving the can and a single terminal. I also thought about spinaker's post as to AC being merely a part of the part number. If all of that holds true than maybe the only actual terminal is + and the can is - and it is an electrolytic cap.

Ron

 

Now that you mention it... Looking close it does look that way, leaving the can and a single terminal. I also thought about spinaker's post as to AC being merely a part of the part number. If all of that holds true than maybe the only actual terminal is + and the can is - and it is an electrolytic cap.

Ron

And there appears to be a plus on the side of the can in the first photo,

 

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Now that you mention it... Looking close it does look that way, leaving the can and a single terminal. I also thought about spinaker's post as to AC being merely a part of the part number. If all of that holds true than maybe the only actual terminal is + and the can is - and it is an electrolytic cap.

Ron

Thank you for your reply! I think that too. Maybe the only terminal is the "+" and the metal body of the case is the "-".

 

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Thank you for your reply! I think that too. Maybe the only terminal is the "+" and the metal body of the case is the "-".

Is that correct? There are actually two tabs and one hole? If so, the one with the + would be the plus terminal, the other the negative terminal. It has been eons since I worked with those kind of cans so I am not sure but the negative terminal could also be the can.

If these aren't a component for component replacement, I strongly recommend you buy a new capacitor from a supply house. Old electrolytics can dry out. You just might be replacing bad for bad.