[sdiy] controlling VCO with guitar

[ASSI]

On Thursday 20 January 2011, Paul Perry wrote:
> It's not trivial to get +-15v with charge pumps - check the input voltage
> ratings on the cheap pumps.

Not sure what you mean by charge pumps (the only ones I know that are true 
charge pumps are for TTL->RS232, e.g. from Maxim), but you'd have a hard 
time drawing much curent from one of those.  There are however inductor 
based DC/DC converters that have +-12V and +-15V output.  Traco has some 
isolated ones with 4:1 range input starting from 4.5V that are rated 3W, for 
instance.  Ripple voltage is something to look out for, so you might need to 
follow with a pair of linear regulators to clean up.


Achim.
-- 
+<[Q+ Matrix-12 WAVE#46+305 Neuron microQkb Andromeda XTk Blofeld]>+

Samples for the Waldorf Blofeld:
http://Synth.Stromeko.net/Downloads.html#BlofeldSamplesExtra