I guess I was too specific for this situation ...
I am not going to use the triac.
on The MPU ...
Pin 3 Emitting through R7 is the end of the
part I am going to use. beyond R7 will not
exist in my application.
The triac in this pic will be relaced with a
"whatever" small transistor, pn2222 or ?
I suspect a MosFet or J-Fet will work better than
a standard BiPolar.
I will be using the 0 -to- 100% on / off curve
from pin 3's output, to gradually turn on and off
a Mosfet / Jfet. I need only a few milliamps.
and the output of pin 3 should create voltage
that spans from .5v -to- 10 v DC . that is
the ultimate goal. and...
I do understand that without changing the MPU
pin 3 output. I may need to use an OpAmp circuit
to translate the voltage range comming out if pin 3.
for example, pin 3 may be outputing say, 3 -to-
8 volts ? or 5 -to- 15 volts ? I will not know till
the other 2 kits get here soon. before tinkering
on those ones
, I wll map out what the meter
says on all the junctions during it's operation first,
THEN ! I'll go Dr. Frankenstein on it ! ( evil laugh ! )
as far as I can tell, the MCU does not know it's
output is going into a Triac. it should work as
well for a Mosfet or Jfet transistor I think...
but - How do I power this with a DC supply ?
what parts are specifically the AC power circuit ?
at some point the parts of this circuit related
to it's output, are powered by DC Power I am
sure. I do not think there are any AC powered
Micro Processors ? are there ?
The original circuit designer does not have any
time for me, or anyone possibly
... but if we
get this to work we will have an awesome
programmable Soft start / soft stop affordable
circuit !!!
regards !!! // Tom \\