[sdiy] power supply

[Scott Gravenhorst]

I use a solderless breadboard for trial circuits.  I screwed the 
breadboard blocks to a metal chassis and built 3 power supplies
into it with binding posts for ground, +5, +15 and -15.  Each
supply uses a 3 terminal 1 ampere regulator IC.  I also have an
adapter board with regulators that I can attach to the +/-15V
regulators that gives me +8/-12 for emulating a FatMan supply.
IMHO, 1 ampere is quite sufficient for the stuff I do, which
is usually 6 or less IC packages.  I've also used more, with 
no problems.

I have tried the idea of bring out the supply from a synth and
I did have a catastrophe once.  I blew up my first FatMan, it 
took 3 days to fix it.  I would NEVER do this again.

Your milage may vary, but mine smoked...

=?iso-8859-1?q?charles=20kerr?= <thebadproducer at yahoo.co.uk> wrote:
>Content-Transfer-Encoding: 8bit
>
>hello everyone, 
>a question and topic change, how do all you synth diyers power 
>your trial circuits? is it best to try out on breadboard with a 
>battery power supply? I was thinking of (I have a Doepfer case 
>with +12v, -12v, 0v and +5v) putting the power out to a blank 
>faceplate and then jacking out of sockets to crocodile clips onto 
>a breadboard/proto circuit but I got to thinking that if I make 
>any mistakes in the circuit than I could mash up my whole synth 
>power supply, would it be alright if I inserted a fuse? but what 
>rating etc? With batteries the supply would not be very constant 
>would it, the supply would drop gradually and over the time that 
>I am trying things out I would be spending an awful lot on 
>batteries, something I would like to avoid if possible. I have 
>noticed that a lot of synth diy stuff is on a 15v power supply so 
>I was considering buying a Blacet supply and using this as a main 
>source for a modular - but for the same reason as above I would 
>prefer to keep this for finished modules. i think what I need is 
>a small 15v supply with enough ampage for one module, where can I 
>get one from? all bench supplies I see are +15v but don't have 
>-15v (same with 12v) could anyone reccomend a solution? 
> 
>no doubt anyone who has read this far is thinking "duur - what a 
>twit!" but if you could help me out I would be eternally grateful 
> 
>thanks for reading and thanks in advance for any response
>charlie
> 
> 
> 
>If anyone has read this far
>
>		
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-- Scott Gravenhorst | LegoManiac / Lego Trains / RIS 1.5
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