electro-music.com   Dedicated to experimental electro-acoustic
and electronic music
 
    Front Page  |  Radio
 |  Media  |  Forum  |  Wiki  |  Links
Forum with support of Syndicator RSS
 FAQFAQ   CalendarCalendar   SearchSearch   MemberlistMemberlist   UsergroupsUsergroups   LinksLinks
 RegisterRegister   ProfileProfile   Log in to check your private messagesLog in to check your private messages   Log inLog in  Chat RoomChat Room 
 Forum index » DIY Hardware and Software
1st time PSU builder need advice.
Post new topic   Reply to topic Moderators: jksuperstar, Scott Stites, Uncle Krunkus
Page 1 of 1 [17 Posts]
View unread posts
View new posts in the last week
Mark the topic unread :: View previous topic :: View next topic
Author Message
Wild Zebra



Joined: Apr 28, 2005
Posts: 806
Location: Ohio
Audio files: 5

PostPosted: Fri Jan 06, 2006 8:51 am    Post subject: 1st time PSU builder need advice. Reply with quote  Mark this post and the followings unread

Howdy all, I'm about to have a few modules and am going to start my very first modular. Razz So I need a PSU figure I'll make this one http://www.musicfromouterspace.com/analogsynth/powersupply.html So what does a first timer need to know. How many modules will it accomadate?, What sort of adapters can I use to plug them up? Whats the best way not to electricute myself? I'm no stranger to DIY just haven't made a PSU yet. So, any help would be great.
_________________
"your stripes are killer bro"
Back to top
View user's profile Send private message
Pehr



Joined: Aug 14, 2005
Posts: 1307
Location: Björkvik, Sweden
Audio files: 2

PostPosted: Fri Jan 06, 2006 9:38 am    Post subject: Reply with quote  Mark this post and the followings unread

I've built that PSU and it works perfect. Just use a transformer like the one shown in this topic. I choose a 500 mA transformer but there are those that can produce up to 2000 mA or more. More mA = more modules Very Happy
Back to top
View user's profile Send private message
deknow



Joined: Sep 15, 2004
Posts: 1307
Location: Leominster, MA (USA)
G2 patch files: 15

PostPosted: Fri Jan 06, 2006 10:18 am    Post subject: Reply with quote  Mark this post and the followings unread

...that looks like a good design..simple, low parts count, etc.

i built one for the paia vocoder several years ago using the schematic supplied in radio shack books (radio shack is like malpin, but in the states). since radio shack sells parts, this design used 2 separate transformers....1 is preferable.


you can also use discrete diodes rather than in integrated bridge rectifier if they are more easily available.

deknow
Back to top
View user's profile Send private message Send e-mail
Wild Zebra



Joined: Apr 28, 2005
Posts: 806
Location: Ohio
Audio files: 5

PostPosted: Fri Jan 06, 2006 10:35 am    Post subject: Reply with quote  Mark this post and the followings unread

Quote:
I choose a 500 mA transformer but there are those that can produce up to 2000 mA or more
So how will I know how many modules I can use. And is there a "patch bay" for lack of better words, that I can have offboard to plug the modules into. Like a male\female setup.
_________________
"your stripes are killer bro"
Back to top
View user's profile Send private message
Pehr



Joined: Aug 14, 2005
Posts: 1307
Location: Björkvik, Sweden
Audio files: 2

PostPosted: Fri Jan 06, 2006 10:57 am    Post subject: Reply with quote  Mark this post and the followings unread

Wild Zebra wrote:
So how will I know how many modules I can use.


That's tricky, you have to know how much current each module draws... Confused

_________________
YouTube channel
flickr photostream
http://loxodrom.blogspot.com
http://www.garageband.com/artist/loxodrom
http://soundcloud.com/loxodrom
Back to top
View user's profile Send private message
Wild Zebra



Joined: Apr 28, 2005
Posts: 806
Location: Ohio
Audio files: 5

PostPosted: Fri Jan 06, 2006 11:34 am    Post subject: Reply with quote  Mark this post and the followings unread

otay, I haven't even got the modules yet. So when I get a little closer I'll ask a few more questions. Just kind of wanted a heads up. I may be p.m.'n you in the not so distant future Pehr. I'm making the 16 step seq too so I may need some more advice.

thanks for the help so far

_________________
"your stripes are killer bro"
Back to top
View user's profile Send private message
Uncle Krunkus
Moderator


Joined: Jul 11, 2005
Posts: 4761
Location: Sydney, Australia
Audio files: 52
G2 patch files: 1

PostPosted: Fri Jan 06, 2006 7:06 pm    Post subject: Reply with quote  Mark this post and the followings unread

Hey Zeb,
If you can afford the transformer (go torroidal if possible) I'd recommend 1A on each rail (+&-). That should be fine for quite a while. Use some type of universal edge type power connector on each module, and as you build them, check what they draw (mA) then write this next to the power connector for that module. When you get to about 80% of your supply's capacity, start building another PSU.

_________________
What makes a space ours, is what we put there, and what we do there.
Back to top
View user's profile Send private message Visit poster's website
Pehr



Joined: Aug 14, 2005
Posts: 1307
Location: Björkvik, Sweden
Audio files: 2

PostPosted: Sat Jan 07, 2006 7:25 am    Post subject: Reply with quote  Mark this post and the followings unread

Wild Zebra wrote:
I may be p.m.'n you in the not so distant future Pehr. I'm making the 16 step seq too so I may need some more advice.


0k, but I haven't started building it yet... Embarassed but I'll start soon. I have had much to do lately...

_________________
YouTube channel
flickr photostream
http://loxodrom.blogspot.com
http://www.garageband.com/artist/loxodrom
http://soundcloud.com/loxodrom
Back to top
View user's profile Send private message
Uncle Krunkus
Moderator


Joined: Jul 11, 2005
Posts: 4761
Location: Sydney, Australia
Audio files: 52
G2 patch files: 1

PostPosted: Sat Jan 07, 2006 7:32 am    Post subject: Reply with quote  Mark this post and the followings unread

Are you guys talking about the sequencer on Ray's site?
_________________
What makes a space ours, is what we put there, and what we do there.
Back to top
View user's profile Send private message Visit poster's website
Pehr



Joined: Aug 14, 2005
Posts: 1307
Location: Björkvik, Sweden
Audio files: 2

PostPosted: Sat Jan 07, 2006 4:05 pm    Post subject: Reply with quote  Mark this post and the followings unread

Uncle Krunkus wrote:
Are you guys talking about the sequencer on Ray's site?


I think so Rolling Eyes

_________________
YouTube channel
flickr photostream
http://loxodrom.blogspot.com
http://www.garageband.com/artist/loxodrom
http://soundcloud.com/loxodrom
Back to top
View user's profile Send private message
Uncle Krunkus
Moderator


Joined: Jul 11, 2005
Posts: 4761
Location: Sydney, Australia
Audio files: 52
G2 patch files: 1

PostPosted: Sat Jan 07, 2006 6:03 pm    Post subject: Reply with quote  Mark this post and the followings unread

Do we want a stripboard layout of that?
I could make it the third choice in my poll.
Instead of just "some 4017 sequencer"

_________________
What makes a space ours, is what we put there, and what we do there.
Back to top
View user's profile Send private message Visit poster's website
Pehr



Joined: Aug 14, 2005
Posts: 1307
Location: Björkvik, Sweden
Audio files: 2

PostPosted: Sun Jan 08, 2006 6:28 am    Post subject: Reply with quote  Mark this post and the followings unread

Uncle Krunkus wrote:
Do we want a stripboard layout of that?
I could make it the third choice in my poll.
Instead of just "some 4017 sequencer"


That would be great! Very Happy

_________________
YouTube channel
flickr photostream
http://loxodrom.blogspot.com
http://www.garageband.com/artist/loxodrom
http://soundcloud.com/loxodrom
Back to top
View user's profile Send private message
Uncle Krunkus
Moderator


Joined: Jul 11, 2005
Posts: 4761
Location: Sydney, Australia
Audio files: 52
G2 patch files: 1

PostPosted: Sun Jan 08, 2006 9:52 pm    Post subject: Reply with quote  Mark this post and the followings unread

That's another fine mess I've gotten myself into Stanley! Laughing
_________________
What makes a space ours, is what we put there, and what we do there.
Back to top
View user's profile Send private message Visit poster's website
Wild Zebra



Joined: Apr 28, 2005
Posts: 806
Location: Ohio
Audio files: 5

PostPosted: Mon Jan 09, 2006 7:40 am    Post subject: Reply with quote  Mark this post and the followings unread

I already bought the boards when the were on sale. I'll need a supply for that, but I need one for some of Ray's modules I'm getting. A while back I was contacted by a feller who had made some of Rays modules and wanted to know if I wanted to buy them. I recently did. Figured I'd be a nice jump start into a modular type thing. I got LP VCF, Multiwave LFO, Signal to Gate, State Variable VCF, and S&H with White noise. So never having seperate modules and never building a PSU figured I'd ask. Now I ask should I buy or build? If buy, any recommendations.
_________________
"your stripes are killer bro"
Back to top
View user's profile Send private message
Uncle Krunkus
Moderator


Joined: Jul 11, 2005
Posts: 4761
Location: Sydney, Australia
Audio files: 52
G2 patch files: 1

PostPosted: Mon Jan 09, 2006 8:23 am    Post subject: Reply with quote  Mark this post and the followings unread

I would build it, mostly 'cos I've already got a lot of the parts for that kind of stuff. (I stocked up before I left Jaycar)
Like I said at the top go for 1-2A per rail. Use 4 pin connectors for each module and make one of the pins a Digital (or dirty) ground. It'll come in handy later, believe me.
I'd probably base it on the one Ray's got on his site.

_________________
What makes a space ours, is what we put there, and what we do there.
Back to top
View user's profile Send private message Visit poster's website
Wild Zebra



Joined: Apr 28, 2005
Posts: 806
Location: Ohio
Audio files: 5

PostPosted: Mon Jan 09, 2006 10:46 am    Post subject: Reply with quote  Mark this post and the followings unread

Quote:
Like I said at the top go for 1-2A per rail. Use 4 pin connectors for each module and make one of the pins a Digital (or dirty) ground.

Ahhh what? Sorry I'm still kind of an idiot when it comes to this stuff although I have been successful building some things> I don't understand alot of what I'm doing. I'm still way off on needing the supply. My modules have not arrived yet. So I got a little time to figure it out.. Thanks for all the help so far

_________________
"your stripes are killer bro"
Back to top
View user's profile Send private message
Uncle Krunkus
Moderator


Joined: Jul 11, 2005
Posts: 4761
Location: Sydney, Australia
Audio files: 52
G2 patch files: 1

PostPosted: Mon Jan 09, 2006 5:52 pm    Post subject: Reply with quote  Mark this post and the followings unread

That's cool,
I'm still learning about "preload" on sequencers to create random steps!!
Just take a look at Ray's PSUs, and give me a holler when you want something cleared up.

_________________
What makes a space ours, is what we put there, and what we do there.
Back to top
View user's profile Send private message Visit poster's website
Display posts from previous:   
Post new topic   Reply to topic Moderators: jksuperstar, Scott Stites, Uncle Krunkus
Page 1 of 1 [17 Posts]
View unread posts
View new posts in the last week
Mark the topic unread :: View previous topic :: View next topic
 Forum index » DIY Hardware and Software
Jump to:  

You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You cannot attach files in this forum
You can download files in this forum


Forum with support of Syndicator RSS
Powered by phpBB © 2001, 2005 phpBB Group
Copyright © 2003 through 2009 by electro-music.com - Conditions Of Use