Saturday, February 23, 2019
Friday, February 22, 2019
32kHz X-tal osc -- new variants
12µA Bjt v. ::
2µA j-Fet v. ::
see also an old C-MOS inverter variant : https://chpsndtch.blogspot.com/2017/08/cmos-osc-s-test.html
[Eop]
Friday, February 15, 2019
Tuesday, February 5, 2019
LM710 from d/s
the previous attempt to make it work (just by principal schematic) failed ... from d/s the magical hFE seems to be 11 . . . ??? (as it's the same timer as 54x00 74x00 series -- the gained information may be practical in getting these models to work with the d/s specified resistances . . .)
my input sensitivity is a bit poorer than the К554СА2 documentation specifies , but basically it will do
note :: even if it takes dual supply and more power than new comparators - then it usually is up to 10 times cheaper for experimental circuits - and someone still may have a storefull of them . . .
the hFE is not matching the 74x00 series
the pages 7,8 have a scope diagram for comparator compared to TTL inverter ::
https://www.analog.com/media/en/technical-documentation/data-sheets/lt1016.pdf
Reproduced experiment ??? ::
[Eop]
my input sensitivity is a bit poorer than the К554СА2 documentation specifies , but basically it will do
note :: even if it takes dual supply and more power than new comparators - then it usually is up to 10 times cheaper for experimental circuits - and someone still may have a storefull of them . . .
the hFE is not matching the 74x00 series
the pages 7,8 have a scope diagram for comparator compared to TTL inverter ::
https://www.analog.com/media/en/technical-documentation/data-sheets/lt1016.pdf
Reproduced experiment ??? ::
[Eop]
random Op Amp Gain adjustment method (slow -- not optimal delay)
i thought it was easy* but (i usually don't compute things unless i have to) when i wrote up a formula it turned out not as such
anyways seems to work without major problems from gain 2 to 8
note* :: that the GA would equal 1+1/gain (as infact it's )
about :: https://www.w3.org/TR/REC-MathML/toc.html
[Eop]
anyways seems to work without major problems from gain 2 to 8
note* :: that the GA would equal 1+1/gain (as infact it's )
about :: https://www.w3.org/TR/REC-MathML/toc.html
[Eop]