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4th December 2020, 12:36 AM
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#21 |
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diyAudio Member
Join Date: Aug 2017
Location: Germany
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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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4th December 2020, 01:09 AM
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#22 |
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diyAudio Member
Join Date: Dec 2009
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Classical Lin power amplifier circuit (5 BJT)
 . 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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