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Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems. |
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#1
Posted to rec.antiques.radio+phono,sci.electronics.repair
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Reading old capacitor values
Mike wrote in message
... In the back of Vol. 2 of the RSGB Radio Communication Handbook it shows two types of ceramic caps. The first has axial leads and the first color band is wider and is TC then 1st, 2nd, M, T. The other has radial leads and has a dot for the tip then 1st, 2nd, M, T. I have seen some old small block caps just marcked with pF values. Mike AA8W "N_Cook" wrote in message ... British 1940s components that are driving me dotty Small rod types with body/end/dot colours red/red/green orange/orange/green yellow/purple/yellow brown/black/brown what meaning to the yellow and green multiplier dots ? and Hunts make, brown cased small block, flat leads, with code oc/3100 impressed into the encapsulation none of them measuring anything like I think the colours/codes mean -- Diverse Devices, Southampton, England electronic hints and repair briefs , schematics/manuals list on http://home.graffiti.net/diverse:graffiti.net/ TC = Temp coeff ? M,T = ? These were body, end face (as leads are formed to loops around the ends) and dot, I will try and take a photo , when I get some time. One was broken and I removed it and replaced with an old axial but plate rather than tubular. -- Diverse Devices, Southampton, England electronic hints and repair briefs , schematics/manuals list on http://home.graffiti.net/diverse:graffiti.net/ |
#2
Posted to rec.antiques.radio+phono,sci.electronics.repair
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Reading old capacitor values
Sorry about that
TC= Temp Coeff M=decimal multiplier, same as resistors to orange. Then gray = .01 and white = .1. T= tolaerance More than 10pF black = 20, red = 2, green = 5, white = 10. All + - % Mike AA8W TC = Temp coeff ? M,T = ? These were body, end face (as leads are formed to loops around the ends) and dot, I will try and take a photo , when I get some time. One was broken and I removed it and replaced with an old axial but plate rather than tubular. -- Diverse Devices, Southampton, England electronic hints and repair briefs , schematics/manuals list on http://home.graffiti.net/diverse:graffiti.net/ |
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