[sdiy] looking for mm5837

[Oren Leavitt]

The MM5837 has long been out of production - Its was made by National 
Semiconductor.
It is a pseudo-random white noise generator in an 8 pin DIP.
It was used for the 'snare' sound for alot of home organs, and in some 
commercial synths.

Perhaps you can retrofit an alternate noise generator to an 8 pin header.
It will have to run off of Gnd and V-.

The MM5837 had a unique sound - you can hear the sequence repeat every 
second...
ffffffftffffffftffffffftffffffft...


Cynthia Webster wrote:

>MM Prefix, I ~think~ That this means
>
>Motorola
>
>Metal
>
>(as opposed to MP for Motorola Plastic)
>
>If you can find a 2N5837
>or a later PN5837  it should be pretty darn close!
>
>Good Luck!
>
>Cynthia
>
>
>on 10/8/03 5:29 PM, Ray Wilson at rayw at csd.net wrote:
>
>  
>
>>Hi yasi
>>
>>I couldn't find the MM5837 anywhere. Often when you find that a chip is
>>un-findable it is probably a good idea to find another way to accomplish the
>>goal or else when your totally cool circuit goes kaput finding a replacement
>>only gets harder and finally impossible.
>>
>>If all you want is noise check this out.
>>
>>http://atlas.csd.net/~rjwsoft/multinoisemodule_exp.html
>>
>>Hope this helps.
>>
>>Ray
>>
>>-----Original Message-----
>>From: owner-synth-diy at dropmix.xs4all.nl
>>[mailto:owner-synth-diy at dropmix.xs4all.nl]On Behalf Of yasi perera
>>Sent: Wednesday, October 08, 2003 3:29 AM
>>To: synth-diy at dropmix.xs4all.nl
>>Subject: [sdiy] looking for mm5837
>>
>>
>>Hi,
>>just wondering if anybody knows where to get some (~25) mm5837's.
>>
>>thanks,
>>yasi perera
>>
>>    
>>
>
>
>  
>

-- 
Oren Leavitt
oleavitt at ix.netcom.com