Do you mean it might not be exactly 5 volts, or that it might fluctuate?  Can I check it with my multimeter?  

Would it be ok if I used a 5v voltage regulator?

Is this along the same lines as to why those small 220v to 110v converters say that you cannot use them with electronics?  

-----Original Message-----
From: piclist-bounces@mit.edu [mailto:piclist-bounces@mit.edu] On Behalf Of Paul James E.
Sent: Wednesday, May 11, 2005 12:15
To: piclist@mit.edu
Subject: Re: [EE] Will phone charger work as a 5v DC power supply?


 Yes you can, but the filtering on the output may not be very good, 
 and it may not be regulated to 5 volts.   It probably is, but no 
 guarantee.   I would build up a dummy load out of some resistors 
 and check it out that way.  Or you could try powering something 
 that takes 5 volts, but that would be risky.

                                            Regards,

                                              Jim



> I found today lying around (and scavenged) a phone charger that reads
> on it:  Output 5.0v DC 1.7A.
> 
> Can I use this as a power supply to my breadboards for simple projects,
> Pics and other testing, etc? 
> 
> 
> 
> 
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