microbe hour DTL + (extends prev.)

as the task has been to def. simple(to build) yet reliable logic base that'd operate in A(A(A)) life cycle (voltage range 1.46(1.57) dn2 1.0V (after that the battery is usually empty and can't be used for extended operation as it fast drops it's voltage) but including the NiMH the range is somewhat 0.8 to 1.6 V) i continuously 're interested in every sh¡t that looks like it

... so the "predecessor" of the one shown in prev. post

 /!\ the above is Spice simulation - i doubt the inverter gets into that speed in real /!\

the real inverters XS & UN "series" compared - static I/O dependency is shown (the output load is voltmeter only)