On 8/27/10 2:15 PM, threeneurons wrote:
That's a pretty simple circuit to get the job done.
One question - what sets the 280 uA current in the MPSA42
collector to MPSA92 base connections? Shouldn't there be a big
resistor there? The MPSA42 will be saturated and the MPSA92
base is one diode drop below 180V.
--
David Forbes, Tucson AZ
I did a little 'Muntz' to rid myself of an extra resistor per stage.
David already knows this. He's been pushing around them electrons for some time now.
Yeah, I figured you were doing something tricky with those emitter pull-downs, but I'm too busy working on the Burning Man packing stuff to do a proper circuit analysis.
Thanks for the lucid description.
--
David Forbes, Tucson AZ
