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Sve i svašta

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Sve i svašta
Sir Oliver Offline
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#6.681
11-29-2023, 05:34 PM
Koje diy pojačalo preporučujete za napajanje +/-65V DC?
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Vlada021 Offline
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#6.682
11-30-2023, 12:06 AM (This post was last modified: 11-30-2023, 01:49 AM by Vlada021.)
Meni za taj napon najbolje paše SR250.


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Dragan100 Offline
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#6.683
11-30-2023, 10:02 AM
(11-29-2023, 05:34 PM)Sir Oliver Wrote: Koje diy pojačalo preporučujete za napajanje +/-65V DC?

Koliko snage imaš na zalihi na tih +/-65VDC ? Trafo 500VA ili više? Možda dva Trafoa...

Sa tim naponom i malo klecanja mogao bi izvuči nekih 200Wrms/8R0 po kanalu,
Koji izlaz preferiraš? BIT-je, Mosfet-e,
DualEmmiterFollower DEF, ili TrippleEmmiterFollower TEF, pa Compaund, Hybrid BJT-Mosfeti...

@Vlada021 ti je dao predlog za odličnu osnovu, FrontEND SR250 je superiorniji (po BW, SR, THDju...) od mnogo drugih topologija.
Poslije Cascodiranog VASa može iči sve šta je gore nabrajano od tipa izlaznog stepena!
LP
Dragan
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Vlada021 Offline
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#6.684
11-30-2023, 11:49 AM (This post was last modified: 11-30-2023, 11:50 AM by Vlada021.)
...ima i front end od sr300 sa fetovima na ulazu i ona kombinacija  od VS150 sa triodama umesto fetova.


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Vlada021 Offline
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#6.685
11-30-2023, 08:53 PM (This post was last modified: 11-30-2023, 11:22 PM by Vlada021.)
...već neko vreme razmišljam da napravim 10-pinski modul od Front enda sr300, takoreći bez RC na ulazu pa do predrajvera (mje340/350) sa hladnjakom. Možda ako vreme dozvoli probam da uradim tako nešto. Samo ne znam dali T10/T19 (T11/T18) treba da budu termalno spregnuti (šema SR250)?
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Vlada021 Offline
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#6.686
12-01-2023, 06:35 AM (This post was last modified: 12-01-2023, 06:42 AM by Vlada021.)
Dali neko ima ideju kako ovo da isprobam dali radi,imam jedan komad i baš bi bilo dobro upotrebiti ga za nešto.

.pdf   CU16025-UW6J-NORITAKEITRON.pdf (Size: 352 KB / Downloads: 25)
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HomeMadeAudioProject Away
majstor Kvariš
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#6.687
12-17-2023, 11:30 PM
https://youtu.be/5HiCb0wcnE0

https://youtu.be/prey5ylIoUg
Bože,daj svakome pameti - ni mene ne zaboravi...
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euronymous Offline
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#6.688
12-18-2023, 01:44 PM
Jako lepo spakovano. Nego mi nije jasno što meće zazor između polutki na trafou kad je half-bridge u pitanju.
"Ako kaniš pobjediti, ne smiješ izgubiti" - Grunf
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Vlada021 Offline
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#6.689
12-23-2023, 11:08 AM (This post was last modified: 12-23-2023, 11:09 AM by Vlada021.)
Dali slučajno neko ima gotov projekat za neki Arduino nano vu metar?, ima po netu ali ne znam čemu da verujem..., danas sam dobio jednu pločicu. Hvala
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gorso69 Offline
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#6.690
12-23-2023, 11:41 AM
Ja sam nešto pravio sa RGB led trakama 
i to je radilo solidno uz pomoć sa foruma oko softvera.Pokušaću da nađem link.
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gorso69 Offline
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#6.691
12-23-2023, 12:04 PM
https://www.hackster.io/ericBcreator/ste...ter-b28e78
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Vlada021 Offline
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#6.692
12-23-2023, 12:31 PM
Eve, upravo sam ubacio kod u arduino..., treba da mi stignu ledovi pa ćemo pločicu da skuvamo. Hvala Gorso69
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gorso69 Offline
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#6.693
12-23-2023, 04:50 PM
Pogledaj i ovo
https://forum.yu3ma.net/thread-2507.html...t=vu+metar
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NIXIE Offline
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#6.694
12-23-2023, 11:15 PM (This post was last modified: 12-23-2023, 11:15 PM by NIXIE.)
Jaoš samo da nađem neki trafo, da probam ovo.


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NIXIE Offline
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#6.695
12-24-2023, 07:18 PM (This post was last modified: 12-24-2023, 07:23 PM by NIXIE.)
Probao sam ovaj Quasimodo tester, radi i ako su čipovi i mosfet sa Aliexpres. Izgleda da nisu fake. Recimo snuber za sekundar ovog malog trafoa koji sam imao pri ruci je 10nF sa 100nF+132oma. Časkom se određuje prava vrednost, nema šta.


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#6.696
12-24-2023, 08:19 PM
ima li negde nekakav video,bolje bi skontao kako to radi?
Bože,daj svakome pameti - ni mene ne zaboravi...
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NIXIE Offline
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#6.697
12-24-2023, 09:51 PM (This post was last modified: 12-24-2023, 10:15 PM by NIXIE.)
Postoji.
Stvar je jednostavna, kreneš od max. vrednosti trimera (recimo 500oma sam koristio) i kako ga smanjuješ odziv ima sve manje oscilovanja i postaje aperiodičan. I tu staneš, ugasiš napajanje i izmeriš vrednost trimera. To ti je otpor na red sa većim kondenzatorom. Svi ostali namotaji na trafou se kratko spoje, samo se jedan po jedan sekundar otvoren meri.

https://www.google.com/search?q=quasimod...Wldw0,st:0
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#6.698
12-25-2023, 07:13 AM
mnogo hvala čovek!
Bože,daj svakome pameti - ni mene ne zaboravi...
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NIXIE Offline
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#6.699
12-25-2023, 08:12 AM
Kritične delove, mosfet i čipove sam kupio kod Kineza na ebay, Chipsgate je prodavac. Ostalo sve ima ovde.
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#6.700
01-12-2024, 07:41 PM
Naleteh danas na LinkedIn-u na zanimljiv post o reizdanju časopisa Računari i novoj verziji Galaksije.
Možda se nekom učini zanimljivim.

https://www.linkedin.com/posts/dejanrist...urce=share&utm_medium=member_android

www.racunari.com
Face up...make your stand and realise you're living in the golden years!
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