Path: 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: 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 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*