Hello all!
I have not shown in the video , but the first time the Ampere were at best and the short was strong .
my power supply delivers 10A is dangerous .
Try again by increasing the current , but in a subsequent trial saw approximately 3A . 39W !!! where they dissipate ?
I'll just make the video . I measured the Ohm input pin J1 . and I saw short : zero ohms .
I try again tonight with 9 volts and with a short cable .
Thank you all for the help and insights.
ciao
andrea