Hi all !
Very interesting topic, so please help me!?
I need a SMPS supply 2x35V/5A (project) for the audio amplifier with TDA7294/4om.
Give the suggestion that the power to choose!
thanks and cheers !!
may be you can try this, it works great. I have modified this design for +-70 and tested on a 400watts amp whihout much heating. You may be required to decrease the no. turns and gauge according to your requirement
thanks
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Why modified this design for + /-70V, i need + /-35V for an amplifier with TDA7294!?may be you can try this, it works great. I have modified this design for +-70 and tested on a 400watts amp whihout much heating. You may be required to decrease the no. turns and gauge according to your requirement
thanks
Question: Does this can be fed to drive amplifier with TDA7294?
thanks
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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 oneWhy 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
Greetings from Slovenia!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
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
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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.
It takes mixing 220....230Vac/2x35Vdc SMPS with Stereo Hi-Fi Amplifier with TDA7294/4om!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.
thanks and cheers !!
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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!
Using Bootstrap Start-Up saves one transformer
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.
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.
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