[sdiy] crackle box

[R. Drake]

also note that the lm709 comes in 8pin and 14pin packages... and metal can,
for that matter.  all the same guts, just different pinouts.  datasheets w/
all packages can be found at: http://www.national.com/pf/LM/LM709.html

is my lucky day--the local surplus store had a few of these in the back
room.  cracklebox, here i come!

lbd



on 11/24/03 10:30 AM, s.thomas at s.thomas at qmul.ac.uk wrote:

> Hi yes LM709  is fine. Point is the 709 was a very early opamp with external
> frequency compensation which is vital to the circuit
> working. Substituting  for an opamp with internal freq compensation wont
> work (I know ..I tried it :-)  ).  Luckily the LM709 is still in production
> when I last checked.
> 
> cheers
> steve thomas
> ----- Original Message -----
> From: "Caleb Johnston" <caleb_1 at msn.com>
> To: <synth-diy at dropmix.xs4all.nl>
> Sent: Monday, November 24, 2003 2:39 PM
> Subject: Re: [sdiy] crackle box
> 
> 
>> the schematic says that a modern op amp can not replace the 709 op amp.
>> 
>> i found a LM709.  would this work?
>> 
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