[sdiy] quantizer working

[peter edwards]

Graham,
I don't want to go giving Mouser a bad name! I've had nothing but  
great experiences with them.
The TL074s I was using were all from my parts bins... not sure where  
or how long ago I got them. All of the other ICs were brand new from  
mouser and they all still work fine. I didn't have to replace any of  
them. I switched out all of the ICs from the first non working  
quantizer I built to see which IC was causing the problem. I guess it  
all got a little messy.
The real trouble was that I was drawing TL074s from an impure stock.  
obviously my bin of TL's has some bad chips. I pirate chips sometimes  
from found circuit boards but I try to keep them out of my "new  
parts" bins, but apparently things get mixed around sometimes :-p
On Jan 9, 2009, at 4:30 AM, Graham Atkins wrote:

> Peter,
>
> Well done, did you say you bought the TL074's from Mouser ?....  
> Just shows even
> the best suppliers get it wrong. Is there a manufacturers ID on  
> them ?.
>
> Graham
>
> On 9 Jan 2009, at 05:15, peter edwards wrote:
>
>> whew.. sorry for all the emails. I got it working. Seems it was a  
>> string of bad TL074s....really weird, but that's what it was. I'm  
>> using TL084s now which are working well.
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>
>