Schulte Compact A Phasing

jhaible · Posted: Mon Sep 10, 2007 3:19 pm Post subject:

Are the Perkin Elmer A906011 and A906012 easy to get in the US ?

(I don't say these will work - I just want to know before I buy samples here in Germany.)

JH.

v-un-v · Posted: Mon Sep 10, 2007 3:21 pm Post subject:

vtl5c3 · Posted: Mon Sep 10, 2007 3:24 pm Post subject:

I just checked at Allied. They don't have them. They're one of the better places to get Perkin Elmer components in the US. Maybe you could do a catalog search on their site for "perkinelmer" to see what comes up. http://www.alliedelec.com

jhaible · Posted: Mon Sep 10, 2007 3:33 pm Post subject:

v-un-v · Posted: Mon Sep 10, 2007 3:36 pm Post subject:

Hmm- do they look like this;?

LDR.png

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v-un-v · Posted: Mon Sep 10, 2007 3:38 pm Post subject:

http://doc.chipfind.ru/perkinelmer/a906011.htm

moosapotamus · Joined: May 11, 2007 Posts: 113 Location: New Hampshire USA

Here are some pics that were posted at diystompboxes a while ago...
FRONT
TRANSPARENT
BACK
... it doesn't look like they bothered with tape or any covering at all for the bulb/LDRs in the original unit.

~ Charlie

v-un-v · Posted: Tue Sep 11, 2007 12:14 am Post subject:

Ahh look at those gorgeous knobs!

Thanks for posting this!

v-un-v · Posted: Tue Sep 11, 2007 12:36 am Post subject:

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moosapotamus · Joined: May 11, 2007 Posts: 113 Location: New Hampshire USA

Actually, looking at that cropped pic of the opto set-up and seeing that yellow tape around the bulb, I recall reading somewhere that the original actually had tape wrapped not around the LDRs, but just around the bulb, only. That's sort of how it looks in the pic, too. Maybe that's to diffuse and even out the light that hits the LDRs? Or, maybe it's because the wavelength that the LDRs were most sensitive to was in the yellow range, hence, the yellow tape around the bulb... maybe??

~ Charlie

jhaible · Posted: Tue Sep 11, 2007 8:11 am Post subject:

jhaible · Posted: Tue Sep 11, 2007 8:17 am Post subject:

jhaible · Posted: Tue Sep 11, 2007 8:19 am Post subject:

frijitz · Posted: Tue Sep 11, 2007 9:04 am Post subject:

jhaible · Posted: Tue Sep 11, 2007 10:19 am Post subject:

moosapotamus · Joined: May 11, 2007 Posts: 113 Location: New Hampshire USA

I think you're right! Also, looks like an extra quad opamp package just below the transformer. And, I don't see nearly as many diodes as there are in the schematic.

~ Charlie

jhaible · Posted: Tue Sep 11, 2007 1:59 pm Post subject:

23isgood · Posted: Wed Sep 12, 2007 1:08 am Post subject:

Hi JH. Could you post a sample of your compact clone? I think the sample you have earlier was going through some other effects? I would love to hear a clean sample of a nice pad going through it. I love phasers. Its my favorite sound effect.

thanks
pete

jhaible · Posted: Wed Sep 12, 2007 3:52 pm Post subject:

Update

My version will run from +/-15V !

Going thru my old documents, I noticed that I've also taken some precautions that will allow the use of slightly different LDRs.

JH.

Now playing: Vangelis, Apokalypse des Animeaux

jhaible · Posted: Wed Sep 12, 2007 4:10 pm Post subject:

v-un-v · Posted: Wed Sep 12, 2007 4:11 pm Post subject:

v-un-v · Posted: Wed Sep 12, 2007 4:14 pm Post subject:

v-un-v · Posted: Wed Sep 12, 2007 4:19 pm Post subject:

Yes!! it's thee Krautrock phaser without any doubt at all! Cool

elektro80 · Posted: Wed Sep 12, 2007 4:23 pm Post subject:

This sounds like the real thing! Yes!