Diy DD coil for MPP Beach Rev-E calibration?

[carloss]

hola amigos del foro me podrian ayudar estoy tratando de aser una bobina doble d 38cm por 38 cm tengo la bobina orijinal como de vase gracias

[Qiaozhi]

hola amigos del foro me podrian ayudar estoy tratando de aser una bobina doble d 38cm por 38 cm tengo la bobina orijinal como de vase gracias

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[tomatos666]

Hi,
if to protect my MPP I have built a second TX circuit for the coil.
I have used the same Mosfet and a fast diode DSEP15-12CR. This diode support 15A. Do protect a 10ohm resistance with 50W are in series.
The TX circuit work good. The switching signal I have taken from TP2, nothing get warm.
Unfortunately the RX-circuit doesn?t work if I use this setup.
On TP3 are the signal as on TP2. Very strange because the Fly back are about 300V and the curve from the coil looks good.
What did I overlook. The audio signal what I hear are completely constant. It doesn?t recognizes if a place a metal on the coil.