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Sve i svašta

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Sve i svašta
HomeMadeAudioProject Offline
...u svetu postoji jedno carstvo...
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#6.321
03-13-2022, 12:06 AM
https://youtu.be/6XUgzgC7AdY
...reci mi Bože,koje si boje kože...
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HomeMadeAudioProject Offline
...u svetu postoji jedno carstvo...
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#6.322
03-13-2022, 12:08 AM
https://youtu.be/tTr7-NMg1gc
...reci mi Bože,koje si boje kože...
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HomeMadeAudioProject Offline
...u svetu postoji jedno carstvo...
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#6.323
03-13-2022, 12:12 AM
https://youtu.be/kqWgBZKeiHU
...reci mi Bože,koje si boje kože...
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HomeMadeAudioProject Offline
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#6.324
03-13-2022, 12:17 AM
ovaj prethodni ispada nije dozvoljeno da se vidi "u zemlji odakle se pruža..." ko razume - ...
...reci mi Bože,koje si boje kože...
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mikikg Offline
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#6.325
03-13-2022, 02:31 PM (This post was last modified: 03-13-2022, 02:33 PM by mikikg.)
@Macola, ovo tražim, "Mini Hot Plate Preheater with USB C Power Supply", gde da nadjemo ovo?

https://www.adafruit.com/product/4948


[Image: attachment.php?aid=37231]



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mikikg Offline
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#6.326
03-13-2022, 02:48 PM
Oficiali logo-i, ima neke veze sa forumom ... : )

[Image: attachment.php?aid=37232] [Image: attachment.php?aid=37233]

[Image: attachment.php?aid=37234]


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savan Offline
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#6.327
03-13-2022, 06:39 PM (This post was last modified: 03-13-2022, 06:48 PM by savan.)
@mikikg imas na Ebay recimo https://www.ebay.com/itm/224557391495 . Sad ste me podsetili na jedan sklop koji sam pravio ali nikad ga nisam zavrsio do kraja. Naime sklop je pravljen za duvaljku, ali mogao bi da se napravi neki preheater od toga Smile Dali je ok ovaj sklop mislim na izbor mosfet tranzistora kao i zero kross detekcije, hoce li biti kabum ako spojim na 230V ?


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HomeMadeAudioProject Offline
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#6.328
03-14-2022, 07:58 PM
.


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...reci mi Bože,koje si boje kože...
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1van Offline
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#6.329
Big Grin  03-31-2022, 09:08 AM
Side-Channel Debugging Big Grin

[Image: attachment.php?aid=37332]


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“If you think you are too small to make a difference, try sleeping with a mosquito.” - Dalai Lama XIV
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gorankg Offline
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#6.330
03-31-2022, 03:45 PM
Ko li ce da razlikuje "Dururuk" od  "Kurururk"?
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enaB Offline
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#6.331
03-31-2022, 05:45 PM (This post was last modified: 03-31-2022, 05:46 PM by enaB.)
To nesto kao ovo Smile (od 20:54 ko nije kliknuo na link...)

https://youtu.be/g0bbekUsCg4?t=1255
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1van Offline
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#6.332
03-31-2022, 08:22 PM
Haha bravo Smile
“If you think you are too small to make a difference, try sleeping with a mosquito.” - Dalai Lama XIV
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branko tod Away
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#6.333
04-01-2022, 08:32 AM
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BeliNinja Offline
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#6.334
04-01-2022, 09:34 AM
Da, pogotovo ova iz frižidera....
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emiSAr Offline
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#6.335
04-01-2022, 10:07 AM
@branko tod: u sridu, rekli bi na Sinjskoj alki.-
pOz
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1van Offline
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#6.336
04-08-2022, 10:39 AM (This post was last modified: 04-08-2022, 10:40 AM by 1van.)
21:36 Smile https://youtu.be/fiwUE_2JhvY?t=1296
“If you think you are too small to make a difference, try sleeping with a mosquito.” - Dalai Lama XIV
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1van Offline
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#6.337
04-10-2022, 01:24 PM
The History of the Yugoslavian Internet Live at SEE 10: https://labs.ripe.net/author/becha/the-h...at-see-10/
“If you think you are too small to make a difference, try sleeping with a mosquito.” - Dalai Lama XIV
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branko tod Away
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#6.338
04-10-2022, 11:42 PM
For wire otoprnik od 0,0000 oma. Zasto pisem o ovom otporniku? Mnogo forumasa
ima instrumentne sa 4 ulaza i moze da meri bas male vrednosti otpora. Ovo je ustvari
etalon od apsolutnih nula oma, a kosta koju stotinu dinara. Mozete da eksperimenisete
a sve je vanredno jednostavno.

Trebalo bi etalon napraviti od bakarne ploce, ne koristiti lemljenje vec bakarne zavrtnje
i bakarne zice da bi se izbeglo stvaranje napona izmedju raznorudnih materijala, mada
se to moze za amaterske primene zanemariti.

Ovo je fabricki uredjaj od sto ili vice dolara:
[Image: 100-0.jpg]

A ovo se krije unutra, ali verovatno kod skupljih modela:


Ovo je tetra spoj i najvaznije je da su sve kontaktne tacke potpuno isto udaljene jedna
od druge, Ozbiljno odradjeno od cistog bakra za vrh opremu.


Amaterski odradjen zero otpor , koji je je losiji od onog gore, ali radi odlicno. I ovde je vidljiv
podjednak razmak izmedju kontakata i apsolutno je nevazno gde koja zica iz 4W ide.


Ovakvo izvodjenje nije dobro i lako unosi gresku.

Kod trouglastog i okruglog izvodjena struje ne prelaze preko sense dela sto ovde nije slucaj.
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BeliNinja Offline
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#6.339
04-11-2022, 08:39 AM (This post was last modified: 04-11-2022, 08:39 AM by BeliNinja.)
Branko,

Hvala za ovo, nisam imao pojma do sad da može tako.

Aj napiši i uputstvo za upotrebu ako nije problem.
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branko tod Away
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#6.340
04-12-2022, 09:08 AM (This post was last modified: 04-12-2022, 06:59 PM by progster.)
Evo kako radi 0 oma:

[Image: attachment.php?aid=37399]

Mislim da je ovako potpuno jasno. Strujni izvor "Drive" recimo da daje 1A, koji prolazi
kroz plocicu gde se javlja neki pad napona, koji sam ja uzeo da je 100uV. Naponski
krajevi, "sense" se fiicki nalaze tacno na polovini tog izvora napona i kako su u istoj
liniji na njima se ne javlja nikakva razlika napona, znaci apsolutno je 0 V. Ja sam uveo
neku struju kroz sense krajeve i definisao da je 10uA. Posto je pretpostavljeni otpor
50 uoma napon greske iznosi 500pV. Ako se smanji ili izbegne sense struja nema ni te
greske. Jedine greske se javljaju su zbog nesavrsene dimenzije i termo napona izmedju
razlicitih materijala.

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