This is taken from the January 1987 issue of Electronics Today International which I didn't realize was still at the bottom of the stack of magazines on my office side chair.

If you have any friends who are electronics hobbyists, you can ask
them to build it for you.

The IC, TDA 1022 (bucket brigade device, or BBD) may be a bit
hard to find. Replacements are the MN3004 or SAD512.


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This post has been edited by Tham: Jul 8 2017, 06:11 PM

TDA1022 cannot be found at Pasar Road.

MN3004 (by Panasonic) and SAD512 are not pin-for-pin
replacements for it.


Can get from Ebay, but not cheap. This was the cheapest I found.

http://www.ebay.com/itm/BUCKET-BRIGADE-DEL...W-/322127211429


Ali Express suppliers don't seem to stock it either.


Alibaba has it, with some allowing a minimun one piece order.

Contact them for pricing and shipping.


https://www.alibaba.com/trade/search?fsb=y&...rchText=TDA1022


TDA1022 was originally made by Philips.

Used in many analog delays, flangers, choruses, electronic
organs, synthesizers and pianos of the 70s to 80s.

http://www.vintagechip.altervista.org/ICs/TDA1022.html



This post has been edited by Tham: Jul 13 2017, 09:58 AM