Well of course not! My meaning was apparently missed. For a varying R, a constant voltage source must vary I to maintain some V. (See Ohm's law) :D I probably should have more explicitly stated the varying R part. Its just a matter of perspectives, really. > >----- Original Message ----- > >From: "Michael Rigby-Jones" > > > >> > >> You can only change current by changing voltage or resiatnce, as per > >> Ohms law! A bench supply in constant current mode simply adjusts > >> voltage to achieve the desired current through an arbitrary > >resistance > > >-----Original Message----- > >From: Robert B. [mailto:piclist@NERDULATOR.NET] > >Sent: 16 April 2004 16:09 > >To: PICLIST@MITVMA.MIT.EDU > >Subject: Re: [EE]: Why isn't Ohm's Law written I=V/R? > > > > > >On the other hand, a bench supply in constant voltage mode > >simply adjusts current to keep the voltage level approximately > >stationary. I think this is more the point that he is missing. > No it does not. In constant voltage mode, the only thing that can adjust > the current flowing is the resistance connected. A PSU cannot magicaly > alter current into a fixed resiatnce without changing it's voltage. > > Regards > > Mike > > > > > ======================================================================= > This e-mail is intended for the person it is addressed to only. The > information contained in it may be confidential and/or protected by > law. If you are not the intended recipient of this message, you must > not make any use of this information, or copy or show it to any > person. Please contact us immediately to tell us that you have > received this e-mail, and return the original to us. Any use, > forwarding, printing or copying of this message is strictly prohibited. > No part of this message can be considered a request for goods or > services. > ======================================================================= > Any questions about Bookham's E-Mail service should be directed to > postmaster@bookham.com. > > -- > http://www.piclist.com hint: PICList Posts must start with ONE topic: > [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads