2.8V at 22.5 amps is 0.12 ohms total resistance in the cable, connectors, etc. That's rather normal.
That's why those cables between your 12V car battery and starter motor are so big. One approach used to maintaining voltage in spite of the unavoidable ohmic losses is to run a third wire for the voltage regulator sense circuit to the load. That way, the regulator is adjusting the voltage to maintain the set value at the load, not at the output of the power supply. Be aware that if anything interrupted that connection, the power supply would go to maximum voltage with serious consequences to the rig and any other equipment connected at the far end. Also, a voltage sense circuit can be rather sensitive to RF pickup which may cause the circuit to increase or decrease the voltage. 73, Ron AC7AC -----Original Message----- This really got me curious. I was in the NAQP RTTY Contest.....and decided to look at the voltage on my K3. I checked the meter on the RM-35A, but those meters are not very good. The volt meter says 14.5 volts. NaH! So, I went to the K3 internal meters and got the following 100 watts out 22.5 amps 11 volts 13.8 volts key up..... 11 volts seems low to me. So, I might have to do some checking out as well. Lee k0WA ______________________________________________________________ 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
