+ - 15 volt supply

[WeAreAs1 at aol.com]

Hello Ho Ho list,

Although I will agree that linear supplies are better suited for our 
particular application, it should be noted that many of today's top-quality 
professional synthesizers have switching power supplies.  For instance, the 
Yamaha TX-816, the DX7-II, the Roland XP-80, most Akai samplers, and many 
others.  I have used these instruments in many studios and have never had 
problems with noise (OK... the TX-816 was a little hissy, but that was 12-bit 
FM hash, not power supply noise!)

I would say that it's worth a try, if you already have the supplies.  The 
most important thing is to be sure that your circuits present at least the 
minimum load that the supply expects to see.  (this includes any unused 
sections, such a +5 volt section - you may need to strap a big resistor 
across it to keep it happy)  What is the minimum load required?  
Unfortunately, you'd have to ask the manufacturer of the supply to know for 
sure.

On the other hand, It's not really too difficult or expensive to build an 
effective little linear supply with 78xx regulators.

Michael Bacich