ASM-1 Power Supply

[gstopp at fibermux.com]

     I'm not sure what the disadvantages would be, since I haven't done a 
     detailed comparison. The VCO waveforms will be slightly lower in 
     amplitude, but that's about it... I suppose the frequency sweep range 
     of the VCOs and VCF may be reduced a bit, but heck they're way beyond 
     audio already. I remember I did all testing with 12 volt supplies. No 
     parts changes that I can think of.
     
     I like 15 volt supplies, and I'll use them if I can, but I use 12 
     volters all the time when I throw projects together just because I 
     have them coming out my ears. Heck just yesterday I ran across a 
     couple Power One HTAA-16W-A supplies, which provide +5 and +/- 12, and 
     I found out they can be cranked up to +/- 17 volts. Cool.
     
     A rule of thumb is that 15 volt stuff should generally run on 12 volts 
     and vice versa. Just make sure to read the chip data sheet "absolute 
     maximum" specs to make sure that a +/- 12 volt circuit doesn't use 
     chips that have a 24 volt max Vee to Vdd rating, because using the 15 
     volt supplies may cause much smoke.
     
     - Gene


______________________________ Reply Separator _________________________________
Subject: ASM-1 Power Supply
Author:  Dave Fulton <dfulton at kopb2.opb.org> at ccrelayout
Date:    2/20/97 6:49 PM


Gene,
     
I noticed that on your post that you indicated that the ASM-1 could be 
powered by 12V. This would be quite nice because I am augmenting my (1)Serge 
panel with 3 ASM-1 based panels. A common supply would be nice. Are there 
any disadvantages to running the ASM's off 12 volts? Any parts changes?
     
Dave