- #1
trini
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Hey guys,
I'm working on finding a circuit which will allow me to pulse about 200A for 50-100 us. My external load is about 0.05 ohm and 3uH. The repetition rate of the pulse is 360 Hz. I require the pulses to be in alternating polarity.
Thus far, I have been thinking about using a push/pull setup using an nfet and pfet, but its hard to find pfets that have a 200A rating. My question is, given that my circuit has a net duty cycle of about 2%, can I use parts rated at 4A continuous?
If I can use lower amperages, I could possibly just buy a 5A rated H-bridge and use PWM to set my pulses up, is this correct?
Any alternative suggestions to achieving my goal would be appreciated.
PS:
the circuit will be used to generate magnetizing pulses for Alnico 5 magnets.
I'm working on finding a circuit which will allow me to pulse about 200A for 50-100 us. My external load is about 0.05 ohm and 3uH. The repetition rate of the pulse is 360 Hz. I require the pulses to be in alternating polarity.
Thus far, I have been thinking about using a push/pull setup using an nfet and pfet, but its hard to find pfets that have a 200A rating. My question is, given that my circuit has a net duty cycle of about 2%, can I use parts rated at 4A continuous?
If I can use lower amperages, I could possibly just buy a 5A rated H-bridge and use PWM to set my pulses up, is this correct?
Any alternative suggestions to achieving my goal would be appreciated.
PS:
the circuit will be used to generate magnetizing pulses for Alnico 5 magnets.