[sdiy] 4006 on evilBay

[jays at aracnet.com]

I do not know if they still make them but some of MicroChip's
processsors use to run on up to 12V.

Jay S.


On Fri, 11 Feb 2011 22:37:12 -0000, "Colin f" <colin at colinfraser.com>
wrote:
>> > BUT - you won't get the CMOS voltage range with either a
>> > microcontroller or a CPLD without level translation.
>> >
>>
>> So, a microcontroller and an opamp, then?
> 
> Not quite.
> You'll need +5v to run your micro.
> The TR909 uses two 4006 and a 4070 for its noise generator.
> I built a functional equivalent of it noise with a PIC, 7805 and a couple of
> caps, and an NPN + 2 resistors for level shift.
> Around 4ukp in parts IIRC. Could have used a zener regulator to save a few
> pence over the 7805, I suppose.
> 
> Cheers,
> Colin f
> 
> 
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