Saturday, November 22, 2014

1.2V experiment

This shit has survived the output short circuits for so far // the lucky idiot stands for clear current path through PN junctions to ground /!\ the LT Spice seems to overlook such condition !!! and simulates "fine" - as if there were large resistance in series with PN junctions ??? - so you have to pay extra attention your currents will take the realistic values ...

otherwise it's quite stable (* the 11-th v. of this particular) 1.2V supply (i have no scope so you'd like to check it for possible noise) drawing some 6mA - which i find too excessive for 6LF22 so i likely'll convert something out of these for replacement - if they run even close to what they simulate(*) ◄ this one is a design concept and likely has inacceptable dependency both on load and on supply

... so much for supplies - thanks to "1-st" i was able to check the "performance" of the various "discreet" logic inverter concepts ...

and some more (this bullshit editor is really great) i like the 3-transistor 1-s (( but it's tricky to get them generating the Sq.Wv at that current mode // + it'd take a lot of components (to test verify and threshold match e.c. , e.c. ) to get - say - slow A/D converter built from )) - the next comes is 2D+2R base-shunt MP42 v. but it also doesn't want to oscillate too well - the last 1 (the lowermost in the last graph) has only 1 stage built - so i donno about it yet (perhaps i should yet rise it's threshold level before testing the Sq.Wv generator -- otherwise the varying ß may cause problems ... )

/// the graphs are normalized to all meters' average - V.max " = V.supply ' = 1.2V ' " - during the measurement - so they contain systematic errors - depending of the set of multi-meters used (likely is the same for the same "type" of inverter)

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