-/+ 50 v SMPS - Page 8

radio · 07:21 AM

Quote:

Originally Posted by luka

and why not? just goes to show how much you understand this, and why you should not do it, it can kill you... I think you would be better off, with buying already made one

Greetings from Slovenia!
SMPS should be submitted well-known amplifier with TDA7294 (stereo 2x100W/4om!?), No problem!

thanks and cheers !!

Please, if you are able to give this to the English or the Serbien or Croation language!?
Best regards and move on!
P.S.
http://www.cyfronika.com.pl/kityavt2/avt2732pdf.pdf

jash2008 · 17th August 2011, 07:44 AM

Quote:

Originally Posted by radio

Why modified this design for + /-70V, i need + /-35V for an amplifier with TDA7294!?
Question: Does this can be fed to drive amplifier with TDA7294?

thanks

so, that means you need a readymade one with all calculations already done, right?

further, do you require a 220vac to +-35v or 12vdc to +-35v.

radio · 09:16 AM

Quote:

Originally Posted by jash2008

so, that means you need a readymade one with all calculations already done, right?

further, do you require a 220vac to +-35v or 12vdc to +-35v.

It takes mixing 220....230Vac/2x35Vdc SMPS with Stereo Hi-Fi Amplifier with TDA7294/4om!

thanks and cheers !!

luka · 17th August 2011, 08:59 AM

let me explain what I wanted to say:
all it takes, bare minimum to do is, to change feedback resistors on SAME design. Now I know of several here that can be used and change to any specs you want, including my own

radio · 17th August 2011, 09:11 AM

[QUOTE=luka;2675324]let me explain what I wanted to say:

Hi Lord
Give your scheme (specify)?
For 220VAC ... 240VAC SMPS 2x35Vdc for stereo Hi-Fi amplifier with TDA7294/4om?!
thanks and cheers!

necrofago · 26th January 2012, 07:53 PM

Hi, can i use a simple atx ferrite core?

luka · 26th January 2012, 09:06 PM

yes, but keep the same number of primary turns

necrofago · 27th January 2012, 05:07 PM

thanks luka

djbneben · 13th May 2012, 07:24 AM

Hello,

Does someone already used this smps for several months? It's a good power supply ?

KatieandDad · 09:53 AM

Quote:

Originally Posted by S.G. Mahbub

Good effort. Keep it up.
Next time try to avoid linear transformer in smps circuit.
Feed back process is good.
Thanks.

SMPS supplies often used to employ a large power resistor and a zener to provide the (eg 12V) for the electronics during start-up. Once the PSU was running, the 12V was supplied by an auxilliary winding on the output transformer. As the resistor only had to provide power for a few cycles it never really got hot.

17th August 2011, 08:59 AM	#74
luka diyAudio Member Join Date: Sep 2005 Location: in Slovenia :)	let me explain what I wanted to say: all it takes, bare minimum to do is, to change feedback resistors on SAME design. Now I know of several here that can be used and change to any specs you want, including my own __________________ home page @ http://www.classdaudio.tk/ @ 24/7 all year long I FEEL SLOVENIA

26th January 2012, 09:06 PM	#77
luka diyAudio Member Join Date: Sep 2005 Location: in Slovenia :)	yes, but keep the same number of primary turns __________________ home page @ http://www.classdaudio.tk/ @ 24/7 all year long I FEEL SLOVENIA

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17th August 2011, 09:11 AM	#75
radio diyAudio Member Join Date: Oct 2009 Location: Bitola MACEDONIA	[QUOTE=luka;2675324]let me explain what I wanted to say: Hi Lord Give your scheme (specify)? For 220VAC ... 240VAC SMPS 2x35Vdc for stereo Hi-Fi amplifier with TDA7294/4om?! thanks and cheers!

26th January 2012, 07:53 PM	#76
necrofago diyAudio Member Join Date: Apr 2007	Hi, can i use a simple atx ferrite core?

27th January 2012, 05:07 PM	#78
necrofago diyAudio Member Join Date: Apr 2007	thanks luka

13th May 2012, 07:24 AM	#79
djbneben diyAudio Member Join Date: Apr 2010	Hello, Does someone already used this smps for several months? It's a good power supply ?