16V is the specified maximum. We do not recommend operating above that level. 73, Eric
www.elecraft.com _..._ On Jan 12, 2012, at 1:49 AM, rolf <[email protected]> wrote: > Elecraft specifies the voltage supply range for the K2 transceiver to 9-15 > Volts. > > This range is suitable for lead or nickel batteries. Using Lithium > rechargeable batteries it gets somewhat problematic. The voltage range with > a single Lithium Ion (or Li-Polymer) Cell is from 4.2 V (fully charged) to 3 > V (lower limit). Using in a power supply battery pack 4 cells in series, > the voltage ranges from 16.8 V (max) to 12 V (min). With the K2 as a load to > the battery pack the maximum voltage drops fast down to the plateau voltage > of about 14.5 V. The upper voltage of 16.8 V, however, exceeds the maximum > supply voltage as given by Elecraft. > > Using 3 Lithium Cells in series, the voltage range will be from 12.6 V to 9 > V. This is within the specified supply voltage of the K2. However, this > voltage range is not very suitable for getting the maximum RF output. > > Question: Keeping the RF power output and the DC Current of the K" below the > maximum limit, is it possible to apply a supply voltage exceeding 16 V > without causing a failure to the electronic components in the K2? > > Especially for portable operation the use of Li-batteries reduces the weight > in the "rucksack" considerably. > > Any answer is appreciated. > > Thanks and 73, Rolf, DL3AO > > > > -- > View this message in context: > http://elecraft.365791.n2.nabble.com/Supply-Voltage-Range-Elecraft-K2-transceiver-tp7179694p7179694.html > Sent from the Elecraft mailing list archive at Nabble.com. > ______________________________________________________________ > 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 ______________________________________________________________ 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
