Improved the К554СА3 model

some tests ::

PS! : because the low CE voltage drop transistors used i cannot guarantee the device will work down to that it does in simulations but i guess it does significantly below the specified ±13.5V

PS#2 ! : the LM311 model is obviously an over idealized one . . . is just included for the comparison

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! Update :: "Unlimited" frequency range oscillator

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[Eop]

concept design of the switching dc voltage inverter

it seems the fast comparators are the soul of the whole thing - replaced the fast op amps coz they failed at various cases

uses 2N3906 2N3904 2N7002 BSS84 - not especially optimized or tuned for anything specific - no real life testing ... !
[Eop]