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Components and Circuits For discussions about component types, alternatives and availability, circuit configurations and modifications etc. Discussions here should be of a general nature and not about specific sets.

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Old 13th Jan 2018, 8:48 pm   #1
IanNVJ35
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Default What component type / value is this?

Just been doing some fault finding and this Tesla brown item looks cracked so will be replacing it hopefully. Its marked:

TC 181 MP
M33
160V = JY

Does any of that make sense? I was thinking it was a capacitor but don't see a value. Thanks for any help.
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Old 13th Jan 2018, 8:51 pm   #2
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Default Re: What component type / value is this?

0.33uF 160V to me..... any one confirm?
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Old 13th Jan 2018, 9:09 pm   #3
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Default Re: What component type / value is this?

Safe bet to me.
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Old 13th Jan 2018, 9:48 pm   #4
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Default Re: What component type / value is this?

Thank you both kindly. I would never have worked that one out! The other one was a 50uF axial - a rare value for sure.
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Old 13th Jan 2018, 10:43 pm   #5
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Default Re: What component type / value is this?

47uf can be used to replace 50uf without any problems, btw.
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Old 13th Jan 2018, 11:01 pm   #6
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Default Re: What component type / value is this?

Quote:
Originally Posted by IanNVJ35 View Post
... The other one was a 50uF axial - a rare value for sure.
They're only rare over here. They're off-the-shelf in the USA http://uk.farnell.com/vishay/tva1512...tor/dp/1199627. In fact RS list them at lower voltages but if you need >150V they don't seem to have those in the catalogue.

Cheers,

GJ
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Old 13th Jan 2018, 11:53 pm   #7
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Default Re: What component type / value is this?

For the 50uF I have either 47 (measures 45) or 56 (measures 53.5). I suppose either would do and the original was only 12 Volt rated so not a high stress application.

I have found that even the 10nF ones have dried out so its a blanket replacement job. Good job that there is only 8. Got all the others on order now so hopefully an easy fix.
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Old 14th Jan 2018, 12:30 am   #8
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Default Re: What component type / value is this?

That Tesla cap is very reminiscent of crumbly brown 'orrible Hunts that abound in '50s/early '60s kit. I expect that every nation has its own particular MCC (Most Cursed Capacitor).
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Old 14th Jan 2018, 1:07 pm   #9
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Default Re: What component type / value is this?

Out of curiosity. does that cap have Chinese symbols? Or is it my eyes
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Old 14th Jan 2018, 1:50 pm   #10
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Default Re: What component type / value is this?

No, it says "TESLA"
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Old 14th Jan 2018, 2:39 pm   #11
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Default Re: What component type / value is this?

Quote:
Originally Posted by camtechman View Post
Out of curiosity. does that cap have Chinese symbols? Or is it my eyes
I had to look twice.

John.
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Old 14th Jan 2018, 3:27 pm   #12
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Default Re: What component type / value is this?

What's the equipment it's fitted in?
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Old 14th Jan 2018, 3:46 pm   #13
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Default Re: What component type / value is this?

Quote:
Originally Posted by IanNVJ35 View Post
For the 50uF I have either 47 (measures 45) or 56 (measures 53.5). I suppose either would do and the original was only 12 Volt rated so not a high stress application.
Yes, remember that by virtue of the way they work, electrolytics always have a wide tolerance [something like +/- 20% being typical] so you don't need to fret about getting an exact replacement - anything between 40 and 70 uF will do provided it's got an adequate voltage-rating.
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Old 14th Jan 2018, 5:43 pm   #14
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Default Re: What component type / value is this?

Quote:
Originally Posted by Station X View Post
What's the equipment it's fitted in?
It's in a vintage engine revolutions counter - made by PAL of Czechoslovakia. It wildly over reads so I am having a go at repairing it. It's very 1960's in its build and electronics even though it was made in the 1980's.
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Old 23rd Jan 2018, 10:45 pm   #15
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Default Re: What component type / value is this?

Just to wrap up I fitted all the new components and now the unit functions perfectly - thanks to all who helped me. And to disperse any doubts that it was 330nF I opened up a second faulty unit that I am fixing and in that one its clearly marked 330n.
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