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From: Adrian Caspersz <email@here.invalid>
Newsgroups: sci.electronics.repair
Subject: Re: Cell Phone Charging
Date: Fri, 11 Apr 2025 09:29:52 +0100
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On 08/04/2025 21:24, Ed Vance wrote:
> When I was in High School I took a  Electric class.
> There was a 6Volt Battery , some assorted length wires with battery clips on
> each end and some homemade Resistors with wire wrapped around a strip of
> Bakelite.
> The Teacher gave us Schematics showing Series,circuit to calculate the Voltage
> and Current we should get when we assembled the circuit and then used a VOM to
> see the readings on the circuit.
> 
> We were told to ALWAYS wire the circuit up first , connect the VOM and then put
> the battery clips on the battery.
> 
> When I charge my ell phone I put the USB C plug in the jack on the phone and
> then plug the other end in the A.C. socket.
> 
> When it is charged up I unplug the A.C.  plug from the socket and remove the
> USB C plug from the phone
> 
> I know it is only 5 Volts but I do it that way.
> 
> Most folks I see unplug the wire from their phone first , then unplug the A.C.
> end.
> 
> Probably doesn't matter, but I'm set in my ways
> Ed

In a parking lot, I came across a taxi driver with his hood open, a flat 
battery inside, him looking for a jump start.

He'd already attached cables to his car battery and was just casually 
holding both leads in one hand, with remaining charge ready to bite...


I made my excuses and left.


-- 
Adrian C