Bandpass comparison

WYSIWYG ::

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[Eop]

Alternate for the BJT Flip-Flop

about :: the simple universal RS Flop has a deficiency -- "negative overshoot" at transistor bases . . . the quick fix would distort otherwise near perfect square wave ::

(the point here was to find an even charging/discharging capacitor based SW source not more complex the below Flop . . . since all such likely require fixed supply or much more complex circuitry the final option of TLV3691 or any substitute was selected)

. . . just checking the double T thingy for 50% duty clock source - but it appears to be requiring too strict tuning --and/or-- voltage source ::

Fortunately there exist a low voltage comparator (to cover that supply range ... otherwise any other SW source can be used) ::

+ a simple varying duty SW source test ::

and a better timed ones ::

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[Eop]

5-bit DAC

 Prev. follow up ::

 

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[Eop]

Poor Models of some Old Soviet Op-Amps + µA741

 

Name The closest analog К157УД2 2x LM301 К174УН4Б none К548УН1А LM381 co К553УД2 LM301 К554СА3 LM311 КР1407УД2 (LM4250) КР140УД1208 µA776C MC1776 КР140УД1408А LM308 КР140УД7 µA741 КР140УД8А µA740 (MC1556) КР538УН2 none КР538УН3А (LM387N co)

Name ss VSMIN ss VSMAX ss IS ss VIO ss IIO ss IIB ss RIDIF ss GBW ss SR ss

about ::

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Some tests :: Zipped Source

 

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Some more tests ::

 

PS ! the last figure specifies the INP voltage range ( ! not the the one of the OUTP ! )

. . .

an improved ver. of the above ::

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[Eop]