[Shop-talk] shop laptop power source

[Matt]

Kind of what I was thinking.I tried the other tips and it varied between 16 to 20V but consistently ran 0.5 to 1.0V above what it described for each tip.These were "no load" voltages by the way. My friend works on laptops and he likes the universal power supply because he can run almost whatever a customer brings in  with it.I was also less $$ than a single dedicated factory unit. MB

---------- Original Message ----------
From: eric at megageek.com
To: Shop-talk at autox.team.net
Cc: "Matt" <mbarre at juno.com>
Subject: Re: [Shop-talk] shop laptop power source
Date: Tue, 30 May 2017 12:40:24 -0400

Matt, 
 
I'm no EE (far from it!)  I didn't even sleep in a Holiday Inn last night. 
But, it's my understanding that as long as the voltage is a little higher (note, not dramatically) it will be OK. 
 
Problems are more likely if the PS produces less voltage than the device requires. 
 
But note, it's not my laptop that will be bricked, so YMMV. 

 
 Sent from my Commodore 64 on a 2400 Baud Modem.
 Tech Viper
 "Be as beneficent as the sun or the sea, but if your rights as a rational being are trenched on, die on the first inch of your territory." Ralph Waldo Emerson  
 
 
 
From:        "Matt" <mbarre at juno.com> 
To:        shop-talk at autox.team.net 
Date:        05/30/2017 12:26 PM 
Subject:        [Shop-talk] shop laptop power source 
Sent by:        "Shop-talk" <shop-talk-bounces at autox.team.net>

 
 
On the recommendation of a friend I purchased a universal power supply with multiple tips as a backup for several laptops I use in the shop.
 The concept is good, based on the tip you select, the power supply automatically adjusts the voltage and polarity.
 
 Well my wife is very cautious and asked that I compare the output with her factory charger.
 Something about not wanting to brick her laptop...
 
 Well, her factory charger puts out 19.5 and the universal shows 20.5
 
 Close enough...   or    close but no cigar?
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