[sdiy] Vactrols == Optocouplers?

[Tim Parkhurst]

Hello All,

I've just come across a boatload (i.e. about 300) of Vactec VTL5C7 vactrols.
Here's a data sheet:

http://optoelectronics.perkinelmer.com/content/Datasheets/vtl5c6_c7.pdf

and a little generic info about optoisolators

http://optoelectronics.perkinelmer.com/catalog/Category.aspx?CategoryName=VT
L5C+Series

As always, watch for that pesky line wrap.

Anyway, these go from roughly 1K to 1M and are kinda fun to play with. I can
sell them for 75 cents each plus shipping. For most points in North America,
I would think regular old parcel post or standard UPS should be pretty
cheap. Let me know off list if anyone is interested. Tell me how many you
want and your zip code, and I'll be able to tell you a total with the
shipping. 

These are new pieces, so I don't know if they have been sitting in a bin
long enough to acquire any "Vintage Sound" molecules. ;)



Tim (vintage brain molecules) Servo
"Imagination is more important than knowledge." - Albert Einstein

************************************************


> -----Original Message-----
> From: Harry Bissell Jr [mailto:harrybissell at prodigy.net]
> Sent: Thursday, March 03, 2005 10:54 AM
> To: music.maker at gte.net; synth-diy at dropmix.xs4all.nl
> Subject: Re: [sdiy] Vactrols == Optocouplers?
> 
> > Someone here has experimented with using an LDR with
> > a combination of LED
> > and lightbulb to speed up a vactrol type device,
> > though I don't know who it
> > is or what the results were.  Perhaps they'll see
> > this and post.
> 
> Hah... anyone can make the attack (cell getting lower
> in resistance) faster. Just throw more light at it.  I
> could see that if you used an incandescent in series
> with the LED, the cold resistance of the lamp would
> overdrive the LED.  A capacitor could do the same.
> 
> I CHALLENGE anyone to make the DECAY faster.  You may
> use anything you like to remove electrons from the
> cell. Maybe a "FLASH-DARK" is what you could use...
> shine it on the cell and convert the stored electrons
> BACK to photons and suck them out of the cell !!!
> 
> "Vactrols" are an endangered species like the OTA at
> this point...
> 
> AND NO SHIT out of you, Senso... with a story that I
> have just queered your big e-bay auction of a big lot
> of your Vactrols (or OTAs)  <bfg>  :^P
> 
> (Vactrols will remain for a while, but new they will
> be quite expensive. Stock up now if you want them)
> 
> H^) harry
> 
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> 

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