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Vintage Radio (domestic) Domestic vintage radio (wireless) receivers only. |
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16th Aug 2019, 10:05 am | #1 |
Retired Dormant Member
Join Date: Aug 2019
Location: Darlington, County Durham, UK.
Posts: 1
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Capacitors + teaching
Hi, another newbie here! A couple of questions as I work through past threads:
-Is there a good learning resource that someone can recommend for radio refurb. -I'm looking to replace capacitors marked Static 0.1MFD 1000VDC Working type BTT. Looking at RS there is not an exact match - what spec should I go for. Is there a general guideline? Thanks Paul |
16th Aug 2019, 10:29 am | #2 |
Moderator
Join Date: Jan 2003
Location: Ipswich, Suffolk, IP4, UK.
Posts: 21,287
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Re: Capacitors + teaching
Hello and welcome to the forums.
This is as good a place as any to start:- https://www.vintage-radio.com/repair...ion/index.html Info on capacitor replacement here:- https://www.vintage-radio.net/forum/...ad.php?t=88767
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Graham. Forum Moderator Reach for your meter before you reach for your soldering iron. |
16th Aug 2019, 10:46 am | #3 | |
Octode
Join Date: Oct 2003
Location: Newbury, Berkshire, UK.
Posts: 1,770
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Re: Capacitors + teaching
Quote:
The working voltage needs to be at least 1000V DC but can be above it (i.e 1500V DC is OK, but would be more expensive). 0.1 MFD may be marked as 0.1 uF or 100nF. 1000V may be marked 1kV If they are axial old waxed paper type or paper types encapsulated with black "tar" then yellow polypropylene types are a good modern sub. https://uk.farnell.com/lcr-component...20polyproplyne
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Chris |
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16th Aug 2019, 12:16 pm | #4 |
Rest in Peace
Join Date: Sep 2008
Location: Solihull, West Midlands, UK.
Posts: 4,872
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Re: Capacitors + teaching
An unusually high DC voltage capacitor in an ordinary valve radio may be connected across the mains. If you are replacing it you should use an X-rated AC capacitor.
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