About 95% correct I reckon Jim, I think the overlap betwen turn off and on is a function of the FET itself, and turn off will always be faster that turn on even for an infinietly steep drive waveform
The parasitic diode is no good in this configuration for catching the spikes from what I call the transient soak choke, I use separate clamp diodes up to the rails effectively 'crosing over' the cent
-- Original Message -- My main driver for using a 340V rail was the need to not have to have a separate PA. A 50V 25A PSU is fine if you can get one - I have an old telephone exchange PSU - but norma