[sdiy] Unidentified component

[Tim Stinchcombe]

In an old book I have:

Electronic Musical Instruments, Richard Dorf, 1968 Radiofile

there is a photo of a Baldwin board showing something very similar to what
you describe, and a schematic, and yes, they are packaged passive
components:

"...Baldwin has followed the common economical practice of placing each
divider's passive components in a packaged circuit."

If this is likely to be of any use, I scan the couple of pages concerned and
stick it up on my website (but it will have to wait until after I have eaten
my tea!).

Tim
__________________________________________________________
Tim Stinchcombe 

Cheltenham, Glos, UK
email: tim102 at timstinchcombe.co.uk
www.timstinchcombe.co.uk



> -----Original Message-----
> From: synth-diy-bounces at dropmix.xs4all.nl 
> [mailto:synth-diy-bounces at dropmix.xs4all.nl] On Behalf Of Loscha
> Sent: 04 October 2011 10:14
> To: synth diy
> Subject: [sdiy] Unidentified component
> 
> 
> They are couplates.
> 
> Mixture of caps and resistors. Quite useless, it seems. 
> Transistors, I investigate thee next!
> 
> 
> ---------- Forwarded message ----------
> From: Loscha <loscha at gmail.com>
> Date: Tue, Oct 4, 2011 at 8:02 PM
> Subject: Unidentified component
> To: synth diy <synth-diy at dropmix.xs4all.nl>
> 
> 
> Hi All.
> 
> I'm gutting a Baldwin organ. Model E-10L sn 02048
> 
> It has these orange flatpack parts by the dozen. There are a 
> few on each oscillator board (seem to have the top osc and 
> it's subsequent dividers down on the same board - there are 
> 12 boards identical to the naked eye in there)
> 
> 1347123L
> A509-032976
> 
> 7 pins - labelled 1-7 on front. They're grouped 3 then 4. 
> SOme pins come from front of part, some back.
> 
> I'm guessing they are a flip flop or similar. There are 2 
> transistors next to each one in the dividing down departments.
> 
> Some sprague resistors packs and caps in here, too.
> 
> I'd love some, esp info if these are useful to anyone or any 
> others from it (or a schematic, I've been unable to find, and 
> aren't familiar enough with Balwins to know what's close enough).
> 
> Reagrds,
>  Edward Jones
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