[sdiy] Preamp circuits

[aerogramma]

I don't know if it would be too crude for you, but for protyping and  
tricks or treat i use a super cheap low part pre amp derived from nic  
collins handmade electronics book

it's based around a CMOS 4049,  has a very low count part (about 6)  
and it works on single 9v battery


On Jul 10, 2009, at 10:37 PM, David G. Dixon wrote:

> I'm looking to build a simple preamp circuit so I can run a microphone
> through my ring modulator and scare the neighborhood kids on  
> Halloween with
> my rendition of "The Humans are Dead".
>
> I was simply going to chain both sides of a TL072 with, maybe, 10x  
> gain on
> both (exact number to be determined to achieve roughly 10Vpp  
> output), with
> perhaps a 474 monolithic AC coupling cap on the input and an  
> attenuator on
> the output.  The whole circuit would be about 1 square inch.
>
> Am I missing something here, or is it just about that easy?
>
> While we're at it, does anybody here have a preferred circuit for an
> envelope follower?  Offline responses are OK.
>
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