Coil Voltages

[sharky]

As per their project specification
I find 10us Tx width for HammerHead and gives 120V flyback and 50us PW and find nearly 300Volts pw

For EE Stuart1 its 200us, does this have to give 800V flyback when compared with HH above rather than a 400V???
TwinLoop indicates 165us and does this give what voltage!! I think its 600V or so as the coil speck is similar to HHead
The IRF gets damaged ????
The transistors are similar IRF740 &Tip32, coil dia similar and turns more or less similar, pulse widths are from 10us-165us does this give 120V to 800V as the coil specks are nearly same...

[FrancoItaly]

Hi Sharki
I use this circuit for Mosfet protection and better stability:

http://www.mytempdir.com/2026381

[sharky]

Circuit correct ??

Hi Sharki
I use this circuit for Mosfet protection and better stability:

http://www.mytempdir.com/2026381

I cant rely on this Circuit