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 Forum index » DIY Hardware and Software » Synthasystem
Do 15v users need a separate power reg PCB for each module?
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kjackman



Joined: Sep 05, 2010
Posts: 69
Location: Utah, USA

PostPosted: Thu Sep 09, 2010 10:42 am    Post subject: Do 15v users need a separate power reg PCB for each module? Reply with quote  Mark this post and the followings unread

If I want to run these modules off a +/-15v supply, would I need to purchase and configure a separate power regulator board for each module? Are those power regulator PCBs available yet?
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dingebre



Joined: Aug 10, 2008
Posts: 260
Location: Salt Lake City, UT USA

PostPosted: Thu Sep 09, 2010 11:31 pm    Post subject: Re: Do 15v users need a separate power reg PCB for each module? Reply with quote  Mark this post and the followings unread

kjackman wrote:
If I want to run these modules off a +/-15v supply, would I need to purchase and configure a separate power regulator board for each module? Are those power regulator PCBs available yet?


For the physically bigger PCB's, everyone gets the power/regulation PCB with the main PCB. You don't order them separately. I apologize if that wasn't clear. They are designed such that you can piggy back them together with short metal or plastic spacers.

You should use a separate power/regulation PCB for each module type at the very least because some modules use additional filtered power. I would recommend using a power/regulation PCB for each module that needs it since you will always get the extra PCB and then it makes the module autonomous and makes connecting it to your main power supply easier.

In order to keep the depth down for Euro rack users, I put the regulation and power conditioning bits on separate PCBs. So, for example, when you buy a VCF, you get the VCF main PCB and a Power/Regulation PCB, and so on for all of the current PCBs. Some of the future modules are small enough that they will have everything on one PCB. For the EG, you get two ENVDL type PCBs, one ENVDT type PCB, and a Power/Regulation PCB. The trigger conversion will be built onto the ENVDL/ENVDT PCBs.

Be sure to look at the pages for the main module, the BOM, and the schematic and you will see if you need the extra filtering capacitors and resistors on the power/regulation PCB.

And yes, I have the Power/Regulation PCBs . I made a big order for those. I'm waiting to see what kind of pre-orders i get to order the other module PCBs.

David

_________________
David M. Ingebretsen, M.S., M.E.
Collision Forensics & Enginering, Inc.

dingebre@3dphysics.net
http://www.xmission.com/~dingebre/Synthasystem.html
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Ricko



Joined: Dec 25, 2007
Posts: 154
Location: Sydney, Australia
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PostPosted: Sat Nov 06, 2010 2:04 am    Post subject: Reply with quote  Mark this post and the followings unread

I am happily building the VCF. Thanks for making this available!!! I will be using the power regulator to pull +/- 15V down to the +12 -10.

A suggestion for a future improvement: I think the power pcb labeling is a little confusing for the input jacks J1 and J2: it would be better to just have "+ve" and "-ve". Sometimes it may be +12 and -10, but it could be +/-12 or +/-15 too. (If the board was installed and powered through j2 to =+/-15V, someone forgetful (me) could come along later, see the labels on J1, and incorrectly connect to it, thinking it was an output. )
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dingebre



Joined: Aug 10, 2008
Posts: 260
Location: Salt Lake City, UT USA

PostPosted: Sat Nov 06, 2010 2:13 am    Post subject: Reply with quote  Mark this post and the followings unread

Ricko wrote:
I am happily building the VCF. Thanks for making this available!!! I will be using the power regulator to pull +/- 15V down to the +12 -10.

A suggestion for a future improvement: I think the power pcb labeling is a little confusing for the input jacks J1 and J2: it would be better to just have "+ve" and "-ve". Sometimes it may be +12 and -10, but it could be +/-12 or +/-15 too. (If the board was installed and powered through j2 to =+/-15V, someone forgetful (me) could come along later, see the labels on J1, and incorrectly connect to it, thinking it was an output. )


Thanks Ricko and you're welcome.

Thanks for the suggestion. I do agree the labeling can be confusing. I consciuosly made the choice to label the main power connectors with +12/-10 because the original power supply was +12/-10. Originally, I was going to build/buy a +12/-10 supply, but ended up using a PowerOne +/-12. When I decided to "go public" and offer PCBs, I just kept the labeling. I'll consider changing it on future PCB buys.

David

_________________
David M. Ingebretsen, M.S., M.E.
Collision Forensics & Enginering, Inc.

dingebre@3dphysics.net
http://www.xmission.com/~dingebre/Synthasystem.html
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