Hi There seems to be some confusion about my two controller kits
The High power controller will work fine with a small panel. The kits are identical except for the blocking diode and power FET. The low power uses a 6 amp FET and a 3 amp diode while the high power uses a 75 amp FET and two 8 amp diodes. You can also add a second 3 amp diode to the low power kit to increase the power to about 70 watts. If you think you may go big at some time I would suggest the high power kit. I have used the high power controller with a 110 amp hour gel cell battery and 150 watts of solar panels as well as a 2.6 amp hour battery and a 3 watt solar panel and it works great with either. The low power kit is less expensive and is fine for small panels. A 3-5 watt panel and a small SLA battery of 2-7 amp hours works fine for a K1 or KX1. A QRP K2 would need a 10-15 watt panel with the same battery. A K2/100 would need a 35 to 100 amp hour battery and 80 to 100 watt panel. All of this this explained in the documentation and application notes that I supply with the kit. Thanks Don Brown KD5NDB _______________________________________________ Elecraft mailing list Post to: [email protected] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
