No, I was just trying to find the good and equivalent transistors that will suit the work

Instead of just pouring money into buying transistors and blowing them, find the reason they keep blowing. Something is wrong some place that caused the original ones to blow.

 

Instead of just pouring money into buying transistors and blowing them, find the reason they keep blowing. Something is wrong some place that caused the original ones to blow.

Take a look at this

 

Maybe some of these will help you more. While not the same name as yours, most of them are the same with the only difference being the color of the case, front panel design and brand name. The circuits inside are basically the same. This is just a small sample of the ones on Youtube.

 

Maybe some of these will help you more. While not the same name as yours, most of them are the same with the only difference being the color of the case, front panel design and brand name. The circuits inside are basically the same. This is just a small sample of the ones on Youtube.

thanks

 

I worry about the gate drive circuits. Between the upper transistors and the lower transistors you have over 300 volts. That means that you cannot connect the gate of an upper transistor to the gate of a lower transistor. Isolated gate drive is needed to keep from zapping (technical term) the gates.

 

I worry about the gate drive circuits. Between the upper transistors and the lower transistors you have over 300 volts. That means that you cannot connect the gate of an upper transistor to the gate of a lower transistor. Isolated gate drive is needed to keep from zapping (technical term) the gates.

Isolated gate drive is needed to keep from zapping
please sample ?

 

This one (above)is very nice and tidy solution from Analog Devices but might not be available in your country.

This one that uses transformers you can wind yourself if you can get the materials.

There are many variations available as either complete IC solutions to do-it-yourself solutions. Searching Isolated Gate Drive with an internet search engine will probably turn up more than you can digest.