Solar controllers for Field Day

[Don Brown-4]

Hi

Field Day is not that far away and you can get those extra points if you are
operating with solar power. I have two solar controller kits that will keep
your battery charged with solar power.

My new low power solar controller uses the same circuit and PC board as my
high power
kit but replaces the more expensive 75 amp power FET and two 8 amp shottkey
diodes
with a less expensive 12 amp power FET and a 3 amp shottkey diode. This
version
also does not need the heat sink on the FET as well. I include 6 pages of
instructions, schematic, check out, circuit description, application notes
and information on proper sizing of panels and batteries. There is a page of
notes on using the controller with a K2, K1 or KX1. The low power controller
and a small 2.8 amp hour gel cell battery can be built into a EC1 box that
will match the K1 or K2. A 5 watt solar panel is fine for a K1 or KX1 and
the QRP K2 needs about 10-15 watts

The new low power version will work with solar panels from 3 watts to 35
watts (I include information on increasing this to 70 watts) It can charge
SLA batteries from 1 amp/hour to over 100 amp/hour ratings with proper
sizing of the solar panel. The price for this new low power version is $20
or $35 for two kits
with one set of documentation. Cash check or money order.

I have also been supplying the high power version of the Solar Charge
Controller Kit for several years. This controller will keep a SLA or LA 12
volt battery charged from solar panels of 3 to about 200 watts. Batteries of
2 amp hour to 110 amp/hour have been used with these controllers. This kit
includes the above documentation and the high power FET, diodes and heat
sink. The kit is $30 or $55 for two kits with one set of documentation. Cash
check
or money order. For a K2/100 a 35 amp hour battery and about a 50-80 watt
solar panel will be required if full power operation is required.

The kits include a 2x3 inch silk screened and solder masked FR4 fiberglass
circuit board, all the parts and documentation required to build the
controller, less a box to mount it into. There is also a 6 volt version
available upon request. These controllers use a precision regulator IC in an
analog
design that does not generate RF noise. There are no adjustments required
and the assembly and check out time should be under one hour.

order from:

Don Brown
KD5NDB
19132 Falls Creek Drive
Flint, Texas 75762

The price includes US first class postage. For Canada, UK and Europe add $5

Thanks

Don
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