[sdiy] BIG PSU ISSUES

[Dan Snazelle]

ok
i did another test..when (with the load hooked up) i tested at the PSU ITSELF (which is a few feet away from the star board) it gave me a reading of around 14 volts. (this is while i am only getting a reading of 10 or 11 at the load)

so...since the PSU itself is running at 14, i should maybe turn the trimmers back to 12volts so i dont harm the PSU???


which voltage matters...the one at the load or at the PSU??


thanks


very confused






--------------------------------------------
check out various dan music at:

http://www.myspace.com/lossnyc


http://www.soundclick.com/lossnyc.htm


http://www.indie911.com/dan-snazelle
(or for techno) http://www.myspace.com/snazelle


> From: subjectivity at hotmail.com
> To: synth-diy at dropmix.xs4all.nl
> Date: Wed, 13 Aug 2008 21:08:57 +0000
> Subject: [sdiy] BIG PSU ISSUES
>
>
> I have a nice powerone supply. its a 12volt or 15 volt +/- volt. I am running it at 12 volts and without a load i used the trimmers to set it for 12volts.
>
> i think this model can handle at least .5 amps per channel. i think actually .75 (in +15/-15 mode it handles less amperage)
>
> now when i hook up my current project, which is three giant breadboards (of mainly CMOS low draw chips) to my STAR breadboard (which is the PSU hooked up to a breadboard which everything else plugs into with 22r resistors as fuses), and i take a reading of the VOLTS of my project i get a reading of 9 volts.
>
> My questions
>
> 1. there are trimmers on the PSU to push it back up to almost 12 volts post load..should i do this? or are the trimmers only for PRE LOAD?
> 2. how can i get around this? could my PSU be messed up?
>
> 3. i know these are low amp chips. i only have ONE led on the entire project. there are some opamps.
> is load voltage not the same? do i not need to worry? or should i get a measured 12 volts? and -12 volts?
>
>
> thanks so much
>
>
>
>
>
>
>
> --------------------------------------------
> check out various dan music at:
>
> http://www.myspace.com/lossnyc
>
>
> http://www.soundclick.com/lossnyc.htm
>
>
> http://www.indie911.com/dan-snazelle
> (or for techno) http://www.myspace.com/snazelle
>
>
>> From: philip.macphail at ntlworld.com
>> To: neil.johnson97 at ntlworld.com; synth-diy at dropmix.xs4all.nl
>> Subject: Re: [sdiy] Another SSM2164 question
>> Date: Wed, 13 Aug 2008 21:49:04 +0100
>> CC:
>>
>>>>
>>>
>>> Thanks, and cheers. Now working on schematic entry and then a PCB.
>>> Thanks to an A3 laser printer from a local Freecycler (who, ironically
>>> is/was on the list as well - hi Phil!) I can now print out my
>>> schematics
>>> BIG!
>>>
>>> Neil
>>> (likes his diagrams in A3)
>>>
>>
>> Hi Neil,
>> Yes I'm still here, and to add to the irony, I have a half-finished
>> VCO based on the SSM2164. The shunt R-C networks on the input that
>> started this thread were a real pain to accommodate with surface-mount
>> components, unless they were put on the back of the board. The larger
>> DIL version would make things much easier.
>>
>> Phil (happy with A4 schematics)
>> _______________________________________________
>> Synth-diy mailing list
>> Synth-diy at dropmix.xs4all.nl
>> http://dropmix.xs4all.nl/mailman/listinfo/synth-diy
>
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