"Greg Mayman" bravely wrote to "Mike Ross" (25 Sep 03  07:57:00)
 --- on the heady topic of "TRANSISTOR RECTIFIER"

 MR> Mayman remarked that it needed a squarewave drive at the bases to make
 MR> it work.

 GM> Well, no, I believe that what I said was that it needed some
 GM> separate drive to make it work and that a square wave was usually
 GM> used.
[,,,]
 GM> Adding an amplifier between the extra winding and the transistor
 GM> base allows the transistor to be driven to saturation much
 GM> earlier and to turn off much later.

 GM> Then if the amplifier has high gain its output will saturate
 GM> and limit the drive current to safe values over the whole of the
 GM> active period.

 GM> This is how the square wave drive I spoke of comes about.

Yes, seems quite good!

 Mike
 ****

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