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Old 21st May 2003, 02:44 PM   #11
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Join Date: May 2001
Location: Bangalore, India
The IGBT amp is an update of an earlier Elektor amp called the HEXFET amp which uses the same circuit with reduced supply rails and changes in a couple of resistor values; uses IRF9540 and 540 on the output. Find the schematic and use the Mosfets to quick check your assembly without burning your pocket too much.

Finally, I too had problems with the Hexfet version itself and gave up after some time. However, there are a few people in this forum who have successfully made the Hexfet amp.

All the best.
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