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Other Vintage Household Electrical or Electromechanical Items For discussions about other vintage (over 25 years old) electrical and electromechanical household items. See the sticky thread for details.

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Old 24th May 2023, 9:55 pm   #1
dragonser
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Default Harmonics Organ and divider ic's

Hi,
I'm working on repairing an old Harmonics Organ which uses the obscure
MA60 divider ic's and a more familiar top octave generator.
the Ma60 dividers are similar to a to5 case but have ten legs,
does anyone have any info on them ?
the rest of this 2 manual Electronic Church Organ uses transistors and the manuals use diode keying.
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Regards Peter B
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Old 27th May 2023, 1:17 pm   #2
factory
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Default Re: Harmonics Organ and divider ic's

Page 72 here has info on the Marconi-Elliott MA60 divider IC, seems to contain six binary dividers, as two chains of three dividers, with divide by two, four & eight outputs for each chain. It uses -26V but is compatible with regular TTL/DTL logic.

https://worldradiohistory.com/UK/Pra...cs-1971-04.pdf

David
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