Help me please ......

[Tewin]

Hello..every body.

I am newbie. I am not design circuit SMPS but I like DIY.

I want schemeitcs SMPS for power amplifier PA . 300w +300w

and show step is wiring thanformer.



Thank you every body....

 

[AndrewT]

I thought you were told it was not a DIY proposition to design and build this 600W SMPS in another thread.

Have you thought about peak current into your loads?
How will your SMPS meet the peak load?
Will the SMPS protect itself?
Will the SMPS protection be audible when it chops off the current demanded by the speaker on transients?

 

[Tewin]

Hello..Andrew T.

I thank you very much for answer.
I thought about peak current into 15 A and Vdc +-65 V.
I will to use 4 ohm of load.
SMPS protect itself when load short circuit.

regards S.Tewin

 

[AndrewT]

15 A and Vdc +-65 V.

SMPS protect itself when load short circuit.

You have not specified the short circuit current limit.
Do you really think 15Apk is the maximum that a 4ohm (reactive load) will draw when supplied from +-65Vdc?
I don't think you have thought this through.

I believe you have fallen into the usual trap of assuming the maximum power of the amplifier can be satisfied by a power supply of the similar maximum power and ignoring the transient nature of normal signals.