Successors for Toshiba's IGBT's GT20D201-GT20D101 used e.g. in Elektor's CFB Amp

tiefbassuebertr · 06:18 PM

Who knows more about suited successors?

Some URLs:
Compact Power Amplifier from Elektor
WTB: IGBT toshiba GT20D201/GT20D101
Wzm.HEXFET - Giesbertsa (elektor 950077) - Do It Yourself - Forum Audio - Audiostereo.pl
http://www.diyzone.net/modules.php?o...quote=1&mod=50

kenpeter · 30th March 2010, 01:03 AM

Well, since R25 = R24 seems like you got a pretty easy conversion to N Quasi.
I'm not entirely sure I'm reading the Ohm values right, they are kinda grainy...

tiefbassuebertr · 21st September 2010, 05:51 PM

any news?

Samuel Jayaraj · 22nd September 2010, 04:37 AM

No, R25=15 ohms and R24=150 ohms. The output stage is configured for voltage gain. This is the same as Elektor's HEXFET amp and it tends to oscillate. The fix published later has however, been successfully tried by some others. I have the boards all assembled and the outputs blown but have not tried the fix yet.

22nd September 2010, 04:37 AM	#4
Samuel Jayaraj diyAudio Member Join Date: May 2001 Location: Bangalore, India	No, R25=15 ohms and R24=150 ohms. The output stage is configured for voltage gain. This is the same as Elektor's HEXFET amp and it tends to oscillate. The fix published later has however, been successfully tried by some others. I have the boards all assembled and the outputs blown but have not tried the fix yet. __________________ Sam

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30th March 2010, 01:03 AM	#2
kenpeter diyAudio Member Join Date: Nov 2007 Location: Dallas	Well, since R25 = R24 seems like you got a pretty easy conversion to N Quasi. I'm not entirely sure I'm reading the Ohm values right, they are kinda grainy...

21st September 2010, 05:51 PM	#3
tiefbassuebertr diyAudio Member Join Date: Jul 2005 Location: D-55629 Schwarzerden	any news?

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