Author Topic: Can you identify this capaciator?  (Read 719 times)

Gattopardo

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Can you identify this capaciator?
« on: 23 August, 2021, 09:02:58 pm »


Would a 275v  x2 replacement make a difference?

Pedal Castro

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Re: Can you identify this capaciator?
« Reply #1 on: 23 August, 2021, 09:11:09 pm »
A 2.2 microfarad 100V capacitor? It's been a while since I did electronics. The J is the  tolerance value.

Gattopardo

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Re: Can you identify this capaciator?
« Reply #2 on: 24 August, 2021, 10:49:31 am »
Would replacing that circled capacitor with a 275v or 305v spec capacitor make a difference?

 

Re: Can you identify this capaciator?
« Reply #3 on: 24 August, 2021, 11:36:24 am »
You need Kim to look in here. :)
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BFC

  • ACME Wheelwright
Re: Can you identify this capaciator?
« Reply #4 on: 24 August, 2021, 11:48:27 am »
An upgrade of the voltage rating is normally a good thing to do, as long as the replacement component fits - different leg spacing can be a pain but is relatively easy to sort but be carefull if the board is subject to vibration, the major problem is if the replacement doesn't fit in the available space or severely obstructs airflow.

Re: Can you identify this capaciator?
« Reply #5 on: 24 August, 2021, 12:18:12 pm »
Looks like a polyester box capacitor. Which would make it 2.2 nanofarads rather than micro.

Paul

  • L'enfer, c'est les autos.
Re: Can you identify this capaciator?
« Reply #6 on: 24 August, 2021, 02:37:07 pm »
Is that 0.1 more than  flux capacitor?
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Kim

  • Timelord
Re: Can you identify this capaciator?
« Reply #7 on: 24 August, 2021, 11:57:35 pm »
You need Kim to look in here. :)

Looks like I'm late to the party.  But yes, voltage ratings are a safe maximum, no issue with using a higher one, if it physically fits (higher voltage ratings tend to mean physically larger capacitors).  Using a lower voltage rating is a recipe for magic smoke release.

Class X and Y mean they're safety rated (to withstand voltage surges) for mains applications.  X-rated capacitors usually fail short-circuit, which is appropriate when they're between live and neutral (there's presumably a fuse that can blow to prevent fire).  Y-rated means they're designed to fail open circuit, which is necessary to prevent electric shock risk when they're connected to earth.

Flux capacitors are rated in Jiggawatts, rather than the usual Farads.
Careful, Kim. Your sarcasm's showing...

Gattopardo

  • Lord of the sith
  • Overseaing the building of the death star
Re: Can you identify this capaciator?
« Reply #8 on: 25 August, 2021, 12:49:45 pm »
Thank you Kim, I thought that the higher voltage would be OK and size is not an issue.  But I now have the Kim fact, bettter than a fact.


Thank you.

Pingu

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Re: Can you identify this capaciator?
« Reply #9 on: 25 August, 2021, 03:19:11 pm »
Is that 0.1 more than  flux capacitor?

Depends on the polarity.