[sdiy] More Kraakdoos stuff

Rafael_Cohen at prusec.com Rafael_Cohen at prusec.com
Thu Jul 28 19:13:23 CEST 2005


I guess you didn't get this email?

----- Forwarded by Rafael Cohen/LAW/Pru on 07/28/2005 01:12 PM -----
                                                                                                                                       
              Rafael Cohen                                                                                                             
              Law Department                              To:                                                    "Jim Thompson"        
              Phone Number: 212-778-6441                   <ifixaudio at hotmail.com>                                                     
              Fax Number: 212-778-6176                    cc:                                                                          
                                                                                                                                       
              Wednesday July 27, 2005 02:04 PM            Subject:   RE: [sdiy] More Kraakdoos stuff(Document link: Rafael Cohen)      
                                                                                                                                       
                                                                                                                                       




No bother at all  :  )
I don't think the ones I got are actually fairchild (UA) I think they are
National Semiconductor (LM) but it doesn't matter.
I got some from Digikey.com, they have the more expensive, "can" style T0-5
and I got some from Debco (www.debcoelectronics.com) they have the 14 pin
DIP which is exactly the same as far as I can tell, except that is has an
extra 6 useless pins.

Best,
Rafael




                                                                                                                                       
              "Jim Thompson"                                                                                                           
              <ifixaudio at hotmail.com>                     To:                                         Rafael_Cohen at prusec.com          
                                                          cc:                                                                          
                                                          Subject:   RE: [sdiy] More Kraakdoos stuff                                   
              Wednesday July 27, 2005 01:17 PM                                                                                         
                                                                                                                                       
                                                                                                                                       




Hello Rafael,
I really hate to be a bother but where did you get your uA709 I.C. from.

Thanks

Jim

>From: Rafael_Cohen at prusec.com
>To: synth-diy at dropmix.xs4all.nl
>Subject: [sdiy] More Kraakdoos stuff
>Date: Thu, 2 Jun 2005 09:36:42 -0400
>
>
>Hey everybody,
>My Cracklebox is almost done and I have a couple questions about it.
First
>off, it is sounding pretty good... except for the fact that it picks up
>radio a little.  Not too bad, and it depends on if I'm going into a mixer
>or straight into a speaker (less radio through the mixer).  Which brings
me
>to my other question... is there any danger of electrocution because of
>going into the mixer?  I know that with only the 9V battery and a speaker
I
>am in no danger, but I get a little scared feeling in my stomach when I
>plug into the mixer which is plugged into the wall and then start fiddling
>with contact points.  I have been safe about it so far, but I want to know
>if I can use my hands on it if I'm going into a mixer.
>
>Also, re: the "line out" question, before I even tried anything else, I
>just went straight from where the speaker would have been (my pac-tec
>enclosure is too small for a speaker) to the output jack and into the
mixer
>and it worked absolutely fine.  After all the fuss and emails about
>schematics, etc... I may try it with a little Shadio Rack transformer I
>have, but it doesn't seem necessary.
>
>I followed this schematic: www.eam.se/kraakdoos except I left off the
>optional C6 and I wired the LED up seperately.
>
>The first few times I started it up it was in oscillation before I even
>touched anything, which threw me off, but that seems to have stopped.
>
>Thanks for all your support with parts and stuff, everyone...
>Very satisfying making some noise last night.
>
>
>Rafael
>









More information about the Synth-diy mailing list