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30w Jean Hiraga Power Supply Design, one large capacitor or several?
30w Jean Hiraga Power Supply Design, one large capacitor or several?
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Old Yesterday, 12:20 PM   #101
jazz is offline jazz  Netherlands
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Originally Posted by AllenB View Post
This is a supply I have used with my Hiraga. The channels are isolated left outputs, input section, right outputs.


The chokes are followed by capacitors without a ground connection as this gives me 20,000uf instead of 5,000uF for the two cans, and the ground connection isnt going to be doing much at this point. This deals with the majority of the differential mode ripple. The small chokes and small stacked capacitors following deal with common mode noise.


This is the capacitor input version which I used to increase the Voltage for the transformer I was using, and had the schematic for. The grounds go back to a single point.


Uhm, sorry don't understand this one. Where's your rectifier?
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Old Yesterday, 01:22 PM   #102
AllenB is offline AllenB  Australia
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I just noticed that, it's an old drawing and I don't remember. Also missing is the transformer snubber.
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Old Yesterday, 03:49 PM   #103
eduard is offline eduard  Netherlands
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Hello,
If you are choosing the right choke like the LL2733 the transformer and the rectifier will have an easier life because there are not charging pulses. You can do a test with a basic quality cap to check which dc output you will get with a load similar to the Hiraga amp.
I will be back after i read you have done thist test.
Greetings, Ed
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Old Yesterday, 05:16 PM   #104
vishalk is online now vishalk  United Kingdom
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Old Yesterday, 05:40 PM   #105
eduard is offline eduard  Netherlands
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Hello,
So you can try to connect them this weekend.
Just make it an LC supply with one cap and the right resistor to give the supply a load equal to the Hiraga amp. 110000F is allready a big cap to use as the first cap.
Then later make it LCRC. The R can be replaced by a choke but you need to use one that has low dcr.
greetings, eduard
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