[sdiy] +/- 9v synth circuits

[ASSI]

On Tuesday 02 December 2003 19:56, Ryan Guilfoyle wrote:
> I'm trying to make a small 9v
> battery powered synth, for open mic nights/use at
> college.

Why 9V, are you thinking of 9V block batteries? I'd consider using 
so-called racing packs (NiMH), standard voltage for those is 7.2V and 
you get a decent 1.2-3.5Ah capacity depending on size. Admittedly a bit 
bulky and adds about 1.5kg to lug around, but with a simple adapter you 
can use the packs on the road and a proper PSU at home. You can 
probably run four NiMH packs unregulated if the circuits are not too 
finicky about the power supply. Voltage is an almost constant 1.2V per 
cell over most of the discharge curve and does not change much with 
load if you get high current, low series resistance packs.


Achim.
-- 
+<[Q+ * Matrix-12 * WAVE#46 * microQkb/Omega * XTk/30 * sonic heaven]>+

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