Gb: Rectifier boards - alternative

peranders · 21st April 2009, 09:15 PM

Alternative design to cvillers board split into it's own thread

Nice board, looks like mine

When my green boards are gone I'll plan to order 4-layer boards, 4 x 70 um copper with gold pads to a substantially lower price than 7 USD if many are interested. I don't have the time to administrate a group buy but you can talk nicely to me and I can order and pass on the package for distribution. Schematics and pcb layout

peranders · 27th April 2009, 09:55 AM

The interest is too low so I will put this on hold. I don't mind deliver a batch for distribution but someone has to be in charge. I don't have any mimimum number, so 50 or 100 boards is OK by me.

Case closed for the time being.

Peter Daniel · 28th April 2009, 08:20 PM

I could never understand why people design rectifier boards like that: they are not particularly cheap, take space and you need to buy additional heatsinks.

The boards I'm using are designed to use chassis for heatsinking, are way smaller and my cost is approx $0.20/pc.

They will also work with 2 pin devices, both TO-247, TO-220

peranders · 28th April 2009, 08:35 PM

Peter, your idea works also but my boards have room for snubbers and may cope with a higher current and you can also use spade connectors. In a tight spot you can have better cooling with my idea and if you really want to mount them like in your case you can do that but the board is a bit bigger. That's the drawback but if something is versatile you may also get drawbacks.

Peter Daniel · 28th April 2009, 08:54 PM

I didn't realize your board offers direct attachment to chassis as well, that's a nice option, if you have enough room.

As to snubbers or caps, whenever I tried them, they were always degrading sound, so I didn't even consider implementing them.

But I guess you can't beat my price of $0.20/pc?

peranders · 28th April 2009, 09:27 PM

The snubbers aren't there for the sound. They reduce EMC.

Nice of you to offer boards for only 20 cents.

Peter Daniel · 28th April 2009, 09:30 PM

While they might be reducing EMC, they screw up the sonics substantially. You decide what's more important.

I'm actually tempted to offer boards for free (that means I cover shipping), subject to Forum donation only.

wirewiggler · 28th April 2009, 11:27 PM

I was under the impression without a spectrum analyzer you are just shooting in the dark with scrubbers anyway , I could be wrong my wife says I usualy am.

Bill

peranders · 29th April 2009, 03:51 PM

You are right. It has to be an educated guess.

21st April 2009, 09:15 PM	#1
peranders Electrons are yellow and more is better! diyAudio Member Join Date: Apr 2002 Location: Göteborg, Sweden Blog Entries: 4	Alternative design to cvillers board split into it's own thread Nice board, looks like mine When my green boards are gone I'll plan to order 4-layer boards, 4 x 70 um copper with gold pads to a substantially lower price than 7 USD if many are interested. I don't have the time to administrate a group buy but you can talk nicely to me and I can order and pass on the package for distribution. Schematics and pcb layout __________________ /Per-Anders (my first name) or P-A as my friends call me

27th April 2009, 09:55 AM	#2
peranders Electrons are yellow and more is better! diyAudio Member Join Date: Apr 2002 Location: Göteborg, Sweden Blog Entries: 4	The interest is too low so I will put this on hold. I don't mind deliver a batch for distribution but someone has to be in charge. I don't have any mimimum number, so 50 or 100 boards is OK by me. Case closed for the time being. __________________ /Per-Anders (my first name) or P-A as my friends call me

28th April 2009, 08:35 PM	#4
peranders Electrons are yellow and more is better! diyAudio Member Join Date: Apr 2002 Location: Göteborg, Sweden Blog Entries: 4	Peter, your idea works also but my boards have room for snubbers and may cope with a higher current and you can also use spade connectors. In a tight spot you can have better cooling with my idea and if you really want to mount them like in your case you can do that but the board is a bit bigger. That's the drawback but if something is versatile you may also get drawbacks. __________________ /Per-Anders (my first name) or P-A as my friends call me

28th April 2009, 08:54 PM	#5
Peter Daniel diyAudio Member Join Date: Jul 2002 Location: Toronto, Canada	I didn't realize your board offers direct attachment to chassis as well, that's a nice option, if you have enough room. As to snubbers or caps, whenever I tried them, they were always degrading sound, so I didn't even consider implementing them. But I guess you can't beat my price of $0.20/pc? __________________ www.audiosector.com “Do something really well. See how much time it takes. It might be a product, a work of art, who knows? Then give it away cheaply, just because you feel that it should not cost so much, even if it took a lot of time and expensive materials to make it.” - JC

28th April 2009, 09:27 PM	#6
peranders Electrons are yellow and more is better! diyAudio Member Join Date: Apr 2002 Location: Göteborg, Sweden Blog Entries: 4	The snubbers aren't there for the sound. They reduce EMC. Nice of you to offer boards for only 20 cents. __________________ /Per-Anders (my first name) or P-A as my friends call me


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28th April 2009, 09:30 PM	#7
Peter Daniel diyAudio Member Join Date: Jul 2002 Location: Toronto, Canada	While they might be reducing EMC, they screw up the sonics substantially. You decide what's more important. I'm actually tempted to offer boards for free (that means I cover shipping), subject to Forum donation only. __________________ www.audiosector.com “Do something really well. See how much time it takes. It might be a product, a work of art, who knows? Then give it away cheaply, just because you feel that it should not cost so much, even if it took a lot of time and expensive materials to make it.” - JC

28th April 2009, 11:27 PM	#8
wirewiggler diyAudio Member Join Date: Mar 2005 Location: Bakersfield Ca	I was under the impression without a spectrum analyzer you are just shooting in the dark with scrubbers anyway , I could be wrong my wife says I usualy am. Bill

29th April 2009, 03:51 PM	#9
peranders Electrons are yellow and more is better! diyAudio Member Join Date: Apr 2002 Location: Göteborg, Sweden Blog Entries: 4	You are right. It has to be an educated guess. __________________ /Per-Anders (my first name) or P-A as my friends call me

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