Hi Mjolinor,

ok, that is one thing I also thought about.

How would you install the PTC? Or would you recommend another heating element?

Controlling the PTC temp would lead to constant on/of cycles ... any recommendations on a relay or MOSFET that will survive the

1) on/off cycles
2) can handle the current (e.g. planed a 50-60 W -> 4.1-5 A)

Thanks!