Of course. My point was "for a given current", so 20A at 120V and 20A at 13.8V. --wunder, K6WRU
On Oct 7, 2013, at 9:03 AM, Richard Fjeld wrote: > I stated the voltage drop across a resistance (the wire conductor) is > directly proportional to the amount of current flow (amperage) through it. > > For a given resistance, as the current increases through it, the voltage drop > increases in it. > > Changing the supply voltage will change the current flow through the same > conductor resistance and affect the voltage drop in it. > > > > -----Original Message----- From: Walter Underwood > Sent: Monday, October 07, 2013 10:20 AM > To: Elecraft Reflector > Subject: Re: [Elecraft] K3 Suddenly died > > There is a point which could be made -- the percentage voltage drop is bigger > at 12V than at 120V. > > If the voltage drop on your power supply wire is 2V for a given current, that > is the same regardless of the supply voltage. With a 120V supply, the wire > will deliver 118V and with 13.8V it will deliver 11.8V. > > So the same voltage drop can matter more at lower supply voltages. > > Note that I'm ignoring the difference between AC and DC and skin effect. > > wunder > K6WRU > ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
