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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
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Marconiphone/Ferguson generic cross reference ?
of 1970s transistors
eg I found related crosses for AF2 = BC109, AF6 = BC107 but what is OP1A, PNP, audio power transistor and its complement OP1B -- Diverse Devices, Southampton, England electronic hints and repair briefs , schematics/manuals list on http://home.graffiti.net/diverse:graffiti.net/ |
#2
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Marconiphone/Ferguson generic cross reference ?
Some BRC / Marconiphone / Ferguson generic cross references
as the info does not seem to be out there. Late 1960s / 1970s transistors, from a few Newnes books, some duplication it would seem in lower spec uses AF1 = BF187 AF2 = BC109 AF4 = BFY52 AF6 = BC107 AF8 = AC128 AF11 = BC186 AF13 = BC186 OP1A = OP2A = AC128 OP1B = OP2B = AC176 RF7 = BF194 Some complementary pairings of the time AC142, AC141 AC154, AC157 AC188, AC187 AD162, AD161 AC186, AC131 AC153, AC176 -- Diverse Devices, Southampton, England electronic hints and repair briefs , schematics/manuals list on http://home.graffiti.net/diverse:graffiti.net/ |
#3
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Marconiphone/Ferguson generic cross reference ?
"N_Cook" wrote in message ... of 1970s transistors eg I found related crosses for AF2 = BC109, AF6 = BC107 but what is OP1A, PNP, audio power transistor and its complement OP1B If my memory serves me well AC128 & AC127 complimentary push pull output Regards John. |
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