Friday, January 22, 2016

a bit unusual logic

was mentioned in pre-prev. post - now i finalized the testing of it - not that it´s ok to go but i just run out the ideas how to futher adjust it . . .

the idea as usual for 1.2V (single battery fed) logic is to make it work at all discharge levels of the battery (1.68V) 1.46V . . . 1.1V(0.75V) -- in common after the battery is discharged below 1.13V it´s power output is limited 4mA continuous drain (10 to 20mA peak loads) and it´s getting worse in minutes - for rechargeable Ni-MH-s the critical voltage is likely lower - that is - they preserve their power output below 1V (unloaded) terminal voltages

 the 1-st run ::

??? still oscillates at 240mV supply ???
Correction: to drop X0 faster usually takes to decrease RC and/or to increase RB

and the 2-nd run ::

tested(read: simulated) at 600mV where the oscillation signal still crosses the threshold
it has 760mV zener that means the supply should be above that level

"XC-trigger" versus JK-trigger - the more idiot proof v. of which is a "pulse-counter" - a pulse-RS-trigger based T rigger
the question here might be  that why to go so complex when the 2-transistor 2-resistor + number of inputs count of diodes do the trick as well . . .
. . . it is that - due the differences in real components - the signal continuity may be lost using simple design
+ the above designs "eat" better the supply and input signal range variations - making it more realistic that i might do something with old SMD transistors "saved" from old blown devices . . .


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