This is really twisted

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Article #21188

#21188

From: *Hobbit*
Date: Sat, 22 Apr 1989 01:19

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I just opened up what porports to be a battery charger for some unknown
kind of radio.  It's a smallish box with a holder on top that has two little
spring-loaded pins down in the well, so you drop the radio in and it starts
charging.  Inside are what you'd expect, a transformer, bridge, a cap, a
regulator, and then it gets seriously weird.  Over at the other end of the 
PCB are two 28-pin DIPs and a crystal.  Now, since when does a lousy battery
charger need serious logic?!  Naturally, my brandy-new NTE book *doesn't*
cross these chips.   The charger's called "Smart Charger" [haw!!] and is made
by Alexander Mfg, Mason City Iowa.

The chips are:

        MSM5842-19RS      "OKI" in a diamond logo
        ADC0808CCN        National, I think

The negative side of the battery pins is fed off three ganged pins of the
ADC0808.  Anyone know what these chips are?  This whole picture is seriously
weird....

_H*

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Message-ID: <Apr.21.21.19.36.1989.3812@topaz.rutgers.edu>

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References: <6.244B3B30@angel.ucm.org> <5770017@hpscdc.HP.COM>

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Path: arc1-ca.pugleaf.net!utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!csd4.milw.wisc.edu!dogie.macc.wisc.edu!uwvax!rutgers!aramis.rutgers.edu!topaz.rutgers.edu!hobbit
From: hobbit@topaz.rutgers.edu (*Hobbit*)
Newsgroups: sci.electronics
Subject: This is really twisted
Message-ID: <Apr.21.21.19.36.1989.3812@topaz.rutgers.edu>
Date: 22 Apr 89 01:19:40 GMT
References: <6.244B3B30@angel.ucm.org> <5770017@hpscdc.HP.COM>
Organization: LCS Expert gang, Rutgers
Lines: 20

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