Quote:
Originally Posted by paulsherwin
I wonder if there was some dispute within Philips regarding the naming of double diodes with separate cathodes. The diodes in the EB/EAA91 are completely separate structures.
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They are, but that may be irrelevant. The EABC80 has 3 diodes, two are reasonably matched for FM discriminator use, the third is quite different for AM. The 'different' diode shares the same cathode as one of the matched diodes. I would argue that the 'B' diodes are the FM diodes and the 'A' diodes is the AM diode, even though it has a shared cathode with one of the 'B' diodes (and the 'C' triode).
Hopefully nobody has found evidence of an EAAAC80...