[sdiy] Switched-mode power supply module in synths... good orbad?

[BARRY KLEIN]

Perhaps if going from wall AC to DC direct but you don't have to do that.
You could use a wallwart or brick for the AC to DC source, then small switchers for the various voltages.
They are so simple - the IC, an inductor, a diode, a few resistors, and some caps.  The parts themselves are SOT23 or DIP8 for our type requirements.
Good ones have output short circuit protection and soft start.  As others have said - used all over the place.

Barry

On Jan 25, 2012, at 7:02 PM, Scott Nordlund wrote:

> 
>> Linear power supply are SO EASY TO REPAIR !!!!
>> 
>> Just my 2 cents..
>> JP
> Yeah, and switching supplies are difficult to troubleshoot- cascading multiple catastrophic component failures, delightful electrocution hazards (remember to use differential oscilloscope probes on the primary side!)... And if you're really lucky they'll put out high voltage and ruin everything connected to them. 		 	   		  
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