## 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 h

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 h

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]

_{FE}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 h

_{FE}is not matching the 74x00 seriesthe 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 $\mathrm{GA}=\frac{1}{\sqrt{1-\frac{2}{\text{Gain}}}}$)

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 $\mathrm{GA}=\frac{1}{\sqrt{1-\frac{2}{\text{Gain}}}}$)

about :: https://www.w3.org/TR/REC-MathML/toc.html

[Eop]