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Does anybody have any info About this french amp?
Does anybody have any info About this french amp?
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Old 4th December 2020, 12:36 AM   #21
Arne Jensen is offline Arne Jensen
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Join Date: Aug 2017
Location: Germany
meanwhile several transistors have tested bad so thats it for restoring. A bit sad but when I think of ehat a pain it was to take it a part properly I dont even wanne know how long the assembly would have taken. I kept all the knobs etc so I can make it look original as soon as I have decided what to put inside. Thanks for you help, at least I've learned some things I didnt know before have a nice weekend! bye bye
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Old 4th December 2020, 01:09 AM   #22
OldDIY is offline OldDIY
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Join Date: Dec 2009
Classical Lin power amplifier circuit (5 BJT)Click the image to open in full size.. Feature: the drivers are doubled to lower the voltage. Can be changed to silicon (BD139 / 140). At the outlet, you can use PNP silicone TIP42, TIP36, TIP2955, etc.
Change the bias. Performance and reliability will improve.
Prototype Dual CV20. A variant on silicon with a change in the conductivity of transistors.
DUAL CV20 SM DE Service Manual download, schematics, eeprom, repair info for electronics experts

Last edited by OldDIY; 4th December 2020 at 01:19 AM.
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