[sdiy] What is Fatar's history anyone?

[Bob Weigel]

Man...I can't believe a company that has made that much stuff having a 
more obscure web history.  Does anyone know when these guys even 
started?  I didn't hear about anything they definitely produced until 
the early 80's I guess...keys for some Siel synths and the like.  Does 
anyone have more info?  Year they began productions?  I'm trying to put 
together as some know a compatability page for keys.  ANY info welcome.  
Any keys that I don't already have up in photographs on my page please 
help out!  Well any synth keys that is.  I'm not really trying to go for 
consumer stuff.  Too much of it out there..too worthless. -Bob

John L Marshall wrote:

> You may want to look at AN-779.
>
> http://www.national.com/pf/LM/LMF100.html
>
> Take care,
> John
>
> Pacific Northwest Synth Meeting September 25, 2004
> ----- Original Message ----- From: "Tom Arnold" <xyzzy at sysabend.org>
> To: <synth-diy at dropmix.xs4all.nl>
> Sent: Friday, April 15, 2005 2:34 PM
> Subject: [sdiy] Switched Cap Filters
>
>
>> I dont suppose anyone has the National Semiconductore Switched Cap 
>> Filter
>> Handbook do they?  At least to get a publication number or something 
>> so I
>> can try and order a copy from National.
>>
>> I'm trying to get a pair of LMF100's to behave as a 7th order Elliptical
>> lowpass, which they should do in theory but I've been unable to make 
>> work,
>> and the app notes I have say that there's a schematic to do exactly 
>> what I
>> want, in the Handbook...
>>
>> Yeah, I know, Switched Cap Filters have their own flavor of 
>> suckiness, but
>> for this particular application they're perfect.  Just dont get quite 
>> steep
>> enough a rolloff with a single chip ( anti-alias filter ).
>>
>> Thanks.
>>
>> -- 
>> -----------------------------------------------------------------
>> - Tom Arnold       -  Free Synth DIY webspace http://www.sdiy.org
>> - SynthGeek        -
>> - BBD Fanatic      -  "...is it a virus, a drug, or a religion?"
>> - echo evho wjxo   -    Juanita Shrugs. "What's the difference?"
>> --------------------
>>
>
>
>