Power Distro PCBs

goldenechos · Posted: Thu Jan 17, 2008 11:08 am Post subject: Power Distro PCBs

I have wanted to give something back to this community, but until last night, I had little.

Power distro boards are not too expensive ($30 from blacet), still I wanted to keep my $30, AND I NEEDED ONE NOW.

This is my first board layout, if anybody sees errors, PLEASE let me know. I have another layout that incorporated bypass caps and circuit protection diodes, however in the interest of saving time, I went with this one. It is pretty hard to plug those MTA connectords in BACKWARDS anyhow (I guess you could always build a cable backwards if you wanted to huff magic smoke)!

The nice thing about this layout is that it is a quasi-Star grounding system. If you use the connector marked for POWERSUPPLY to make connection to your supply, no module will be further then 3 module connections from GND and SUPPLY. With the Blacet supply, you can have 8 modules between GND and that last connector. As there are basically 2 busses on mine, you could perhaps even provide some isolation for a noisey module by placing it on a seperate buss.

This board is tested. I made one last night, and I have been enjoying it all morning.

The layout is ready for press n peel type etch, the image is at 300dpi

powerDistro.png

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Press n peel ready

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powerDistroparts.png

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Uses .156" MTA style connectors like Blacet.

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powerDistro2.png

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At State Machine's suggestion I have added an indicator LEDs and drill markings. this board is not tested.

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powerDistro2parts.png

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not tested

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State Machine · Posted: Thu Jan 17, 2008 11:22 am Post subject:

Looks very nice. Very Happy

May I suggest mounting holes and maybe LED indicators ?

Bill

fluxmonkey · Joined: Jun 24, 2005 Posts: 708 Location: cleve

similar to the layout i use, except mine's a long strip rather than folded... i suspect yrs is mechanically sturdier.

my only issue has been drilling... i don't have a nice carbide bit that big, and sometimes my regular twist drill rips up the copper enough to break the trace. easy enough to kludge when soldering, but i added 'donuts' around each hole to keep as much copper available as possible.

if anyone got it together to do a run of proffessional boards like this, bare minimum features, i'd be in for a TON.

bbob

goldenechos · Posted: Thu Jan 17, 2008 1:27 pm Post subject:

goldenechos · Posted: Thu Jan 17, 2008 1:29 pm Post subject:

RF · Posted: Thu Jan 17, 2008 4:58 pm Post subject:

Fernando · Posted: Fri Jan 18, 2008 2:01 pm Post subject:

me also

What I like of MOTM power distr board ($39!) is that it has both power input and output connectors and of the set screw type.
For me it is the ideal design.

http://www.synthtech.com/testcart/forums.html?main_page=product_info&cPath=67&products_id=180

goldenechos · Posted: Fri Jan 18, 2008 4:06 pm Post subject:

Fernando · Posted: Fri Jan 18, 2008 4:58 pm Post subject:

the good thing is that it has screw terminals for both in and out

and 21 slots

numbernone · Joined: Aug 16, 2006 Posts: 477 Location: new york city

I second third forth a call for somebody to get some pro boards for this purpose...you wouldnt even wanna see how my power connections are made.

I imagine a minimum of hundreds would be requested in short time.

loss1234 · Posted: Sat Jan 19, 2008 3:55 pm Post subject:

i'd be in for one. (or i could etch one i guess)

i know i could use an, ummm. safer board!! i am using a piece of stripboard set up with two buses and screw terminals on the inputs. the problem i am having is that i already have a module that needs its own bus. (CGS LFO-the leds might be the culprit)

anyway, i have been using the 3pin mta connectors, maybe using these dual ground 4 pins would help.

State Machine · Posted: Sun Jan 20, 2008 8:40 pm Post subject:

State Machine · Posted: Sun Jan 20, 2008 8:45 pm Post subject:

bugbrand · Posted: Mon Jan 21, 2008 5:15 am Post subject:

Hmmmmmm

Power distro boards would be mighty useful for me too... I'll think about whether I can do the do on this using futurlec for decent priced boards.

I'd actually be very keen to get two types - one for the 0.156" headers and one for IDC (like doepfer). Standard screw terminals at each end, caps - plus maybe protection diodes? and even power indicator LEDs?

I'd always reckon on making them long and thin rather than bunched up...

Hmmm, more thoughts?

goldenechos · Posted: Mon Jan 21, 2008 5:31 am Post subject: