Sun Nov 4 00:06:45 EDT 2012
Cleaning up digital out
This needs an inverter that's run from a clean power supply.
Additionally, running this at about 1.0-1.2V would give a good V-range
for an exp converter, as it has midrange around 0.5-0.6V which could
drive a bipolar base directly.
- a clean voltage supply
- inverter running of of 1V
maybe just 2 diodes (transisto diodes?) connected to V+ through a
current-limiting resistor. this would set the "mid level" current.
maybe there's a way to set the 0 an 1 levels this way also? have 2
diodes, one with minimal current, one with maximal current, then gate
this to transistor bases. to keep the currents low, 2 diodes could be
used on the high end.
it seems a differential pair is a better fit for this. this then has
a 0V level and a diode-controlled 1 level. what about the uC shorting
a diode stack? difference between 1 and 2 diodes?