Zen V5 finished! testing now! - diyAudio
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Old 7th August 2003, 02:11 AM   #1
Peleus is offline Peleus  Taiwan
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Default Zen V5 finished! testing now!

One of my friends had finished Zen V5 yesterday, and testing now! He, however, used different MOSFETs, these mosfets are 2SK1529/J200. He said that this topology may have some unstable nature, so got 100mV offset without any regulated PSU!
He guessed the offset shoud be pull down by using regulated PSU, then he will try the regulated PSU in few days.

Wish you guys cheer wiht these photos!

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Old 7th August 2003, 02:47 AM   #2
Peleus is offline Peleus  Taiwan
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forgot the bias! He used 1.5A!
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Old 7th August 2003, 02:51 AM   #3
jleaman is offline jleaman  Belgium
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Nice heat sinks. Hope the project turns out good for him..
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Old 7th August 2003, 10:25 AM   #4
PedroPO is offline PedroPO  Portugal
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I'm going to build to mine next week. I allready got the boards and all the parts

Tell me something: What are the size/weight of your heatsinks?

What is the rails voltage and heatsink temperature? I need to know if the sinks I bought are enough. (they are finned with 200x200x40mm). I plan to use 1/ch or if thats not enough maybe two.

I'll use 28V rail voltage and the bias... I dunno yet! maybe 1.5-2.0A.

Please light my path, since you walked trough it allready.

thx,
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Old 8th August 2003, 01:24 AM   #5
Peleus is offline Peleus  Taiwan
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Default Sorry! I'm testing the function of attaching file

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File Type: jpg zen v5p1.jpg (30.0 KB, 1095 views)
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Old 8th August 2003, 01:27 AM   #6
Peleus is offline Peleus  Taiwan
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Default It's work! so that's next!

For some guys may not see the photos in the future, so I decide using the attaching file function in this forum to avoid the problem causing by hyperlink!

that's next!
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File Type: jpg zen v5p2.jpg (27.0 KB, 1087 views)
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Old 8th August 2003, 01:28 AM   #7
Peleus is offline Peleus  Taiwan
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Default And the final one!

cheer with it!
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Old 8th August 2003, 02:35 AM   #8
Peleus is offline Peleus  Taiwan
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To Pedro~

The heatsink's size is 120mm x 89.5mm x 60mm (L x W x D) in each one. According the catalog form local store, its weight is 6.01 Kg/M and 1.4(C/W/T). My friend used + - 26.5V, 1.5A in the rails, and he did not get precise tempreture due to instrument unavailable. However, It was quite hot during test. So, you may use some one bigger. My firend calculated the dissipation will be 39 W in each MOSFET, so the total dissipation is 78W. Comparing the Pass's orignal survey, my friend's Zen V5 get more 2 W but Mr. Pass used 25V and 1.5 A bias.

We hope these information will help you to build one.
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Old 8th August 2003, 02:38 AM   #9
Peleus is offline Peleus  Taiwan
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Default Now! the regulated PSU fininshed!

This regulated PSU use IGBT in output stage and used different topology with the original one desgining by Mr. Pass.
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Old 8th August 2003, 02:42 AM   #10
Peleus is offline Peleus  Taiwan
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the second photo of regulated PSU
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