Hi guys,
Im struggling to understand how an N channel mosfet will work in my situation. Im charging a bank of capacitors and the mosfet is being used as the switch to start charging. Only problem is I keep reading that the gate voltage has to be higher than the source voltage which is why they are usually placed after the load to tie the source to ground. So if i charge the bank of capacitors therefore increasing their voltage, and hence the source voltage, will the mosfet switch off eventually when the source is higher than the gate voltage?
If so, what can i use to switch this charging circuit on that can also handle 0.15A at 450V? Would a P channel mosfet work?
Im struggling to understand how an N channel mosfet will work in my situation. Im charging a bank of capacitors and the mosfet is being used as the switch to start charging. Only problem is I keep reading that the gate voltage has to be higher than the source voltage which is why they are usually placed after the load to tie the source to ground. So if i charge the bank of capacitors therefore increasing their voltage, and hence the source voltage, will the mosfet switch off eventually when the source is higher than the gate voltage?
If so, what can i use to switch this charging circuit on that can also handle 0.15A at 450V? Would a P channel mosfet work?