SV: Re: [sdiy] Low voltage noise source

[karl dalen]

Good idea!
Will try!

Reg
KD
--- Ken Stone <sasami at hotkey.net.au> skrev:

> Perhaps the endles string of op-ams would do the trick. I forget where I've
> seen the diagram, but basically it uses a row of op-amps (4 or so) set with
> high gain, ultimately amplifying "nothing". resistor noise etc is what
> ultimately becomes your noise source.
> 
> Ken
> 
> >Im trying to do a low voltage noise generator,im talking about
> >a all analog (no shift register)at +5V supply with at least
> >1V P to P output!
> >
> >This has shown to be difficult, its quite hard to get a PN
> >junktion to "noise" (grounded diode coupling, zener or the 
> >typical NPN back to back coupling) at these voltages,
> >if it does there is too much DC after up gaining stages
> >that popping ocurrs even with DC blockler. Or the final
> >noise are very collored due to the gain structure, allmost
> >band passed! Also due to massove gain its quite sensitive
> >to hum from varius sources!
> >
> >Any ideas folks on low voltage wite noise generators!
> >
> >Thanks!
> >
> >Reg
> >KD
> >
> _______________________________________________________________________
> Ken Stone   sasami at hotkey.net.au or sasami at cgs.synth.net
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>