Chips & Tech.

Wednesday, August 20, 2014

Spice alternate for SN7404 К155ЛН1

cross domains linking test ::

summary :: at such a high frequency the operational zone for supply voltage and also component parameters appears to be unusually narrow - i used 3 methods to derive the following 1) - const. f wave forcing through chain of 3 to 9 inverters ; 2) - (for NAND gates) 5x ring osc.'s output loaded by extra 5 inputs / (for NOT buffers) dummy 5x ring osc. (no outputs) ; 3) - (for NAND gates) 5x ring osc.'s output loaded by extra 3 inputs and forwarding these to 3NAND which on turn was loaded by dummy input of a NOT buff.

PS/!\ -- i donno what happens if you vary the supply voltage by a couple of milli volts

waveforms ::


(?Yo! -- i can see it , i can see it (some sh¡t works (for now x;b)))	blaah

chips ::

summary :: [▲]

[EOF]

Wednesday, August 13, 2014

Diode Д9К

a while ago i tried to add it's model to LT-spice - following the specs of common Spice diode model parameters' spec. - THIS didn't quite end up as expected ???

so now i just studied the response of the I(U) graph to random LT's diode model parameter change and came to smth. that in (near) static mode resembles to a real world Д9К

some process steps in graphical representation ::

? empty DIV ?? !Wow

!!"Q%%&&¤/(/ - jälle see "Googel" ei toimi (ma ei kujuta ette neid inimesi kes iga päev siia midagi toksivad , HELP! HELP!) . . . ok , mis kuradi pilt siin on ..
↑ the lab Z-Up - a bi-way scanning of the diode chain varying the curent ↑

↑ fresh 10x + old 1x graph + static I(U) dependency ↑

↑ .model D9K D(Is=40u Rs=.3 N=3.2 Cjo=12p M=1.2 tt=60n Iave=30m Vpk=30 mfg=SpiceCLOzE type=silicon) ↑
/!\use at your own risk/!\

xls's static I(U) dependency build/check plot

? should i attempt to switch back to Compose view . . . (should backup this 2 note' B4) -- no switching! (not yet depressed coz the otherwise soo in-common Google malfunction) ('ll Save & FO here)

[EOF]

Wednesday, July 23, 2014

a bit unusual linear voltage regulator

some months ago i tested the FM-mic circuit that made the most sense of the ones presented in www - actually i want to use it for data comm. but there's along way there

anyways (during the test) the fq. drifted down something like a half a MHz per second ???

there might be several reasons for that
- the Cu-coil acting as a spring (slowly - expanding??)
- the battery being too weak (i had no regulator in this test)
- the BJT heating up (loosing the h21e value)
- other ...

... starting from the supply i attached a simple/efficient regulator (not tested in practice yet - all simulation) ::

[EOF]

Wednesday, July 9, 2014

Idiots' Club

Hi, i'm idiot - just like the rest of the Google ^_^ (feels like at ♥home♥)

what we must realize here is that the upper v. does not display on Google/Blogger while the lower v. actually does . . . . . . . . . i guess it's obvious that it is so . . . something . . . um

<html><body bgColor=white text=black>
<script language="javascript"><!--
function idv(x,y){return Math.floor(x/y-(x%y)/y+1/4)}var ps=new Array(),sp=new Array(),zx=new Array(),m=0,r,c,n,z;ps[m++]="ef336fddd1069f91ea2";ps[m++]="e9e32f4f9f769d1cf0e";ps[m++]="cf99120c7bf66ffc9ea";ps[m++]="2c5b30e3fad13eebc32";ps[m++]="61fd32bc5f9b7ee5d1f";ps[m]="0";ps[m]+=ps[m++];for(var i=0;i<8;i++){n=13*i;r=idv(n,19);c=n%19;if(c>6){sp[i]=ps[r].substr(c,19-c)+ps[(r+1)%6].substr(0,c-6)}else{sp[i]=ps[r].substr(c,13)}}n=0;for(var i=0;i<8;i++)for(var k=0;k<2;k++)for(var j=0;j<4;j++){var r=4*k+j; c=8*i+r;sx=parseInt("0x0"+sp[i].substr(6*k,6+k));zx[c]=(sx>>>(7*(3-j)))&0x07F;if(r==0){n+=zx[c]}}z="";for(var i=0;i<n;i++){var r=idv(i,7)*8+i%7+1;z+=String.fromCharCode(zx[r])}document.write(z);var tthf=document.getElementById("txetgnihsalf");var ttvs=60,tths=0,tm0r;function f7a5h3r(){tm0r=setTimeout("f7a5h3r();",ttvs+tths);if(tths==0){tthf.color="#0061ff"}else{tthf.color="#ff3c00"}tths=1-tths}function init0CBA(){var tm0r=setTimeout("f7a5h3r();",1000)}document.onload=init0CBA();
//--></script>
</body></html>

<html><body bgColor=white text=black>
<script language="javascript">
var ttvs=60,tths=0, tm0r;
var s="<font id=\"txetgnihsalf\" color=\"black\">update</font>"
document.write(s)
function f7a5h3r()
{ tm0r=setTimeout("f7a5h3r();",ttvs+tths)
  if(tths==0){tthf.color="#0061ff"}else{tthf.color="#ff3c00"}
  tths=1-tths
}
var tthf=document.getElementById("txetgnihsalf");
function init0CBA(){var tm0r=setTimeout("f7a5h3r();",1000)}
init0CBA();
</script> :: hi-ko
</body></html>

now with sources

[EoF]

this is how you can do 1&'he same thing over&(f)o(re)ver & there's Zero use of it

about :: THE PREVIOUS POST
_______________________________________________________
in blogger preview :: (this is in mainline what the reader would see after release/publishing)
[EXTRACT]

src :: https://chpsndtch.blogspot.com/b/post-preview?token=mqkIHUcBAAA.HVkjiG_B8dXupRs5MHjZzQ.N9vlkeAg5VyI4HFsq0nDUw&postId=7495419795600999761&type=POST

update :: the TL'-s error tracking feature looks like to be exportable

[/EXTRACT]
_______________________________________________________
in released post :: (this - is what you do see (after publishing))
[EXTRACT]

. . . trading off the startup/NRG to range and Fq. . . . don't ask me how - i just work here XD

[EoF] src :: http://chpsndtch.blogspot.com/2014/07/custom-zener.html

[/EXTRACT]
_______________________________________________________
& B4 it in Editor's HTML preview :: (this is what you'd never saw until now F;Y)
[EXTRACT]
i just work here XD<br />
<hr />
<script language="javascript"></script>
:: it seems the TL's error tracking feature is adaptable to different supply schemes . . .
<br />
<div class="separator" style="clear: both; text-align: center;">
<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEj8rANi0ihc_61zuKPUW3_beHnWjDJY3KqASgQH8QQry3THC8lzFyLERUICElSRroUr622owWZv85wGOvmCO504iroXz-p3oDYO8vjR4tY8do_P0Mjoknhoxtu2HU9Bl-60XZxGqbsydiuZ/s1600/VtgSimple-1341-aca.gif" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEj8rANi0ihc_61zuKPUW3_beHnWjDJY3KqASgQH8QQry3THC8lzFyLERUICElSRroUr622owWZv85wGOvmCO504iroXz-p3oDYO8vjR4tY8do_P0Mjoknhoxtu2HU9Bl-60XZxGqbsydiuZ/s1600/VtgSimple-1341-aca.gif" height="234" width="320" /></a></div>
[EoF]
[/EXTRACT]
_______________________________________________________
[End of this bullsh¡t]