Mosfet Help
Need some help in working out what is goin on with my mosfet.
Mosfet : IRFB38N20DPBF
200v 44amp N- Channel
Its use: It receives a pulse from the output of my 555 (12-13v) an allows current to flow from the - terminal of a transformer to earth. (also 12-13v)
Problem: Im not getting any pulsing on the Drain Source side.
Troubleshooting: I have hooked it up to battery with the gate through a 50k resistor an without, and with a lamp as the load but stil get the same result which is. The drain- source stays on an eventually fades off, then when i turn the gate on, it does the same, the pulse of the on time is about 1min, where as i need it to be 400hz....
Any help would be greatly appreciated