- Joined Mar 21, 2016
The IGBT is basically a MOSFET with an emitter follower bipolar transistor hanging from the drain. Driving it is just the same as a MOSFET, but the emitter follower makes it a slow switching device.
Thank you my friendsDatasheet: input capacitance 4 nF, rise / fall times 230 / 700 nsec, gate charge ca 200 nCoulomb. Thus Q=i*t or 200e-9=i*230e-9 or i=(~) 1 Ampere. I wonder if 2n2222 is able for so large current. The complementary pair ought be used some more powerful.
Well...it's a bit of an incomplete design as it sits... do you have measurement scopes?I have tied resistance(1 ohm - 10 watt) in series with motor to divided The voltage (the main power supply)(265 v dc)
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by Luke James
by John Koon