Rare Flanger circuit!

http://img.photobucket.com/albums/v317/StephenGiles/Bell_BF20flanger2.gif
http://img.photobucket.com/albums/v317/StephenGiles/Bell_BF20flanger1.gif
I don't know where one can buy the SAD 512 now though.
Stephen

Since Electro Harmonix still makes the Electric Mistress they must be available or do they use a new circuit today?

Since I use to repair organs I still have a few left!

Looks like a Don & Tony Larking Special... The Bel Flanger, perchance?

-I wonder if you couldn't double-clock an SAD1024 and make it work that way? ..of course, you'd still have to find an SAD1024... Reticon, I think.

Keith

Arn't you thinking of the SAD 1024?
Stephen

I mixed up the type numbers :roll:
Here's pdf about the two circuits
http://experimentalistsanonymous.com/diy/Datasheets/SAD512-1024.pdf

Roland may still have some of those BBD's, I know Roland Australia has an amazing stock of old parts.

BTW I repaired an ARP Quadra yesterday, it has an awesome phaser built in, I can post the schematic if anyone is interested.

Yes please Steve, that would be very interesting. I believe it uses a 4007 for noise reduction which would behave in a different manner to the usual 571 variety
Stephen

For BBD's and other exotic stomp box ingredients, hop to http://www.smallbearelec.com.
They have the SAD 1024 in stock.

cheers,


michael

[quote author="Steve Jones"]Roland may still have some of those BBD's, I know Roland Australia has an amazing stock of old parts.

BTW I repaired an ARP Quadra yesterday, it has an awesome phaser built in, I can post the schematic if anyone is interested.[/quote]

I've made a clone of this some years ago, replacing the expensive dual FET with an instrumentation amp built from BiFet opamps.
You can find the schematics and pcb layout here:
http://home.debitel.net/user/jhaible/additional_schemos.html

JH.