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Author Topic: what is this  (Read 1474 times)

vegoil

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what is this
« on: October 18, 2021, 09:58:12 PM »
Help needed to identifying this blown part.
« Last Edit: October 18, 2021, 10:08:51 PM by vegoil »

broncodriver99

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Re: what is this
« Reply #1 on: October 18, 2021, 09:59:45 PM »
It looks like a capacitor to me. Most likely for noise suppression and RF interference.

broncodriver99

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Re: what is this
« Reply #2 on: October 18, 2021, 10:02:58 PM »
There may still be some readable info on it. It will either be rated in f (farads) or uf (micro farads), most likely uf. There should also be a voltage rating on it. Hopefully it is still readable.

vegoil

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Re: what is this
« Reply #3 on: October 18, 2021, 10:07:24 PM »
It was on the end of the BKB generator I am getting the hang of putting on photos. a photo is better than a thuosand words Ha Ha.

vegoil

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Re: what is this
« Reply #4 on: October 18, 2021, 10:13:55 PM »
Thanks for the help I will order a capacitor uf 22 600 VDC

regards

John

vegoil

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Re: what is this
« Reply #5 on: October 18, 2021, 10:34:17 PM »
having a closer look on the photo it could be .22 and not 22 what do you think?

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John

32 coupe

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Re: what is this
« Reply #6 on: October 19, 2021, 12:32:35 AM »

I can't see the writing on the cap but it looks too large to be .22
Pretty sure its 22 uf

If it's  not blown up a meter will tell you.

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broncodriver99

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Re: what is this
« Reply #7 on: October 21, 2021, 04:43:31 AM »
Is that another one in the last picture? If so, as 32 coupe suggested if you have a meter that reads capaicitance you can test the other one. I would imagine they are the same.
« Last Edit: October 21, 2021, 04:51:30 AM by broncodriver99 »

mobile_bob

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Re: what is this
« Reply #8 on: October 21, 2021, 05:40:09 AM »
if it is a noise suppressor and as such .22 would not do much in that regard
22mfd would be much more likely for that application

much more likely to be a filter capacitor for the field current to the brushes, i see a transformer, so it is my belief you have a transformer controlled generator. and they used larger capacitors to smooth the field current.  22 mfd would be what one would expect to find for that application.

check to see if one of the leads is connected to one of the brush holders, and if that is the case 22mfd is what it is.

.22mfd really has no application in power generation having anything to do with field current, and where this one is located there is no other reason to have a capacitor.

you can have it tested, but it is so old that it is likely to have drifted so far from spec that the results might be very misleading, that and the tolerance to start with was probably 20% either way, so even when it was new it might read 16-24mfd.

if there are two of these in this unit, replace them both, if one has failed the other is soon behind it.  also when it comes to this sort of capacitor, you can go with a higher mfd rating, however do not go with less than the 600volt rating.  more mfd' will provide more filtering, which is not a problem, less volt rating and you might have one explode on you, and you get to do it all over again, plus get to clean all the shrapnel and electrolyte residue out of the wiring, brushes and where ever else it gets blown or sucked into.



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vegoil

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Re: what is this
« Reply #9 on: October 21, 2021, 10:27:47 PM »
Hi all,

I only use the generator to put power to storage heaters, not radios or televisions. is it necessary to replace the radio interference capacitor?

Regards

John

vegoil

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Re: what is this
« Reply #10 on: October 23, 2021, 02:39:34 PM »
Do you think that this one will be suitable

J010H622J Capacitor: polypropylene 22uF 600VDC 5% 37x84mm Leads: axial MIFLEX
Manufacturer: MIFLEX
Type of capacitor: polypropylene
Capacitance: 22F
Operating voltage: 600V DC
Tolerance: 5%
Capacitor Compatible with: audio equipment
Body dimensions: 37x84mm
Leads: axial
Mounting: THT
Dissipation: 0.003

Regards

John
« Last Edit: October 23, 2021, 09:56:11 PM by vegoil »

mobile_bob

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Re: what is this
« Reply #11 on: October 23, 2021, 03:54:28 PM »
that capacitor is much higher quality than is necessary, but sure it will do the job.
just mount it like the original so it doesn't wiggle around and break a lead and it should be good  to go.

bob g
otherpower.com, microcogen.info, practicalmachinist.com
(useful forums), utterpower.com for all sorts of diy info