[sdiy] divider ic's

[soundgood at web.de]

I will have a look tomorrow what the chips are and take some more measurements. All I remember in the moment is that they are ITT chips. Its for the CDX 652 organ I am working on.A 1975 or 76 model.

All I found out so far is that there are 12 Oscillators in this organ producing square wave outputs. This is applied to the ITT chip which has 7 squarewave outputs of a half, a third ....frequency. There is also an resistor array somehow conected to the chip.
The problem is I don't have any circuit diagrams of the instrument so I have to figure everything out by myself.

Well pore infos tomorrow when I have been in the workshop.

But thanks sofar you have allready been very helpfull.

> Dear soundgood at web.de wrote:
> if you want to try to replace the divider ic's used in an organ then you
> might want to consider using something like a cmos 4024 ic 
> this has 7 stages inside , and each output is avaialble .
> there is also the 4520 which has two seperate sections, but not so many
> dividers.The pin connections and voltage levels will probably be
> different .
> so it may mean making up a small sub pcb to correct the differences .
> if you let us know what ic's the organ uses then this would help knowing
> what to suggest as a replacement .
> regards Peter
>  


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