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DIY Regulirano napajanje LM338K 
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Vec jako dugo hoću složit regulirano napajanje za eksperimentiranje ali nikako da uhvatim vremena ni love zato sam ovo radio 4 mjeseca polako, dio po dio, jos sve u stanu. Kutija je davno složena za lampaško predpojačalo koje je krepalo pa je ona ostala.

Shema je ova, jedino što u napajanju nije 14000uF nego dva od 6800uF jer nisam imao 14k uF a nisam htio kupovat.

http://www.aaroncake.net/circuits/supply.asp

Dakle:
Kutija tj materijal me kostao 150kn
lm338k - 50kn
Trafo 2x12V 120VA - 150kn (Gudprajs :) )
hladnjake sam imao
mur860 diode za graetz-ov spoj sam imao od gainclon-a
ventiće sam imao
voltmetar i ampermetar na ebay-u cca 50kn
prekidači, led diode, buksne, stopice, bužiri, nosač osigurača - cca 50kn ebay (bar potrosenog materijala)
potenciometar - 10komada na ebay-u bilo 3$

Evo slikica:

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test load @3A, hladnjak je poprilično vruć :D
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Vide se crte na prednjoj stranici od "crtanja" :D, nisam vise mogao brusit, jos nisam imao brusni papir za metal nego za drvo a nije mi se dalo ic kupit :D htio sam to samo sastavit vise :)

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Last edited by bego on Sat Feb 16, 2013 4:06 pm, edited 1 time in total.



Sat Feb 16, 2013 3:46 pm
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Odličan posao  :respect: Kako si toroid fiksirao za kučište?

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Sat Feb 16, 2013 4:01 pm
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Ima svoj navoj toroid pa samo odozdola šaraf ;)

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Sat Feb 16, 2013 4:02 pm
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DIY nije mrtav- bravo Bego :)


Sat Feb 16, 2013 6:40 pm
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super projektich :)

Ja bih sebi trebao izraditi sličan :)

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Sat Feb 16, 2013 6:57 pm
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odlicno :)

strujni limiter nisi slagao?

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Sat Feb 16, 2013 7:57 pm
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Fino slozeno :respect:
Za sta si planirao koristiti taj stroj ??


Sat Feb 16, 2013 9:10 pm
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eh, jos jedna stvar... mislim da ti je hladnjak za 338-icu malo poddimenzioniran. osobno bih zviznuo gore jedan ili dva venta kad ga mislis ganjati na vecim strujama jer ce ti disipacija snage biti ogromna.

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Sat Feb 16, 2013 9:42 pm
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stressman wrote:
eh, jos jedna stvar... mislim da ti je hladnjak za 338-icu malo poddimenzioniran. osobno bih zviznuo gore jedan ili dva venta kad ga mislis ganjati na vecim strujama jer ce ti disipacija snage biti ogromna.


Nece taj ic na vece struje bar ne na dugo vrijeme ;) nisam slagao nikakav limiter :D

marko_v wrote:
Fino slozeno :respect:
Za sta si planirao koristiti taj stroj ??


eksperimentalno napajanje, uvijek treba za nesto, imam vec par godina jedan mali 12V aku i preko njega experimentiram, pa uvijek moram kemijat sa regulatorima i otpornicima za određeni napon...

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Sun Feb 17, 2013 5:24 am
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Bego to odradi bolje nego fabrički


Sun Jun 01, 2014 6:11 pm
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