900W H-class PA Amp with Limiter

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I created this travo own
I use a silicon steel / crgo as its core
imported from japan
10cm high
3.8 cm thick
7.5 cm diameter circle in
cores weighing 9.5 k
primary wire 1.5 mm
secondary wire 1.8 mm
with turn ratio of 1.5
spent approximately USD 1,000,000 (U.S. $ 90)
and need the time at least for 3 days to finish 1 unit travo
Sorry my english

nice work! may i know where you get your irons? and how much?
 
Step Driver

Can I use this step driver for B500 with 3 final transistor,Sir??

Regards
 

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