What is this IC?

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  1. - 9th January 2025, 14:43 #1
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    Default Re: What is this IC?

    These used to be the AM detector diode commonly used in transistor radios in the 80's and early 90's
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  2. - 9th January 2025, 16:36 #2
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    Default Re: What is this IC?

    Then, Jerson, I bet you are around 60's ?

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  3. - 10th January 2025, 04:01 #3
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    Default Re: What is this IC?

    Almost there
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  4. - 10th January 2025, 12:18 #4
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    Default Re: What is this IC?

    Obviously...!

    Youngers I am sure do not know about AM demodulation through germanium diodes!

    Once, at the age of 10-11, I made the first AM radio with such a diode, and an old telephone earpiece that was connected to a vertical metal waterpipe. It was amazing experience to here the local radio station with this!!!

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  5. - 11th January 2025, 03:48 #5
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    Default Re: What is this IC?

    I still should be having a couple of germanium transistors AC187 or similar in my toolkit from way back when I used to repair equipments.
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  6. - 12th January 2025, 19:06 #6
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    Oh, yeah, AC187/AC188 pair... Classic for the era. Me too have them!

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  7. - 13th January 2025, 08:59 #7
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    Default Re: What is this IC?

    So, you guy seem to indicate that this part was used shortly after the invention of flint arrowheads but before flintlock rifles?
    My Creality Ender 3 S1 Plus is a giant paperweight that can't even be used as a boat anchor, cause I'd be fined for polluting our waterways with electronic devices.

    Not as dumb as yesterday, but stupider than tomorrow!
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