22 Sep
2013
22 Sep
'13
12:22 p.m.
On 2013 Sep 22, at 8:10 AM, dwight elvey wrote:
Thanks Brent
I'd not noticed the diode path to -15v.
I know, it's horrible trying to figure things out when they're drawn
in a convoluted manner as it is. That's why I redrew it, and do so
with lots of things, so (as much as reasonably possible) the E
potential is consistently increasing in the vertical direction.
That pretty much clamps 3 to about -14V
on the positive direction.
Putting the zener wouldn't help there.
I get about 40mA as well.
I'll have to give it a little more thought.