[Elecraft] solar panel controller

Don Brown [email protected]
Tue Feb 10 18:45:01 2004


Hi

I have a solar panel kit for sale that will work with the K2 battery. It =
must be connected directly to the battery so you will need to install a =
connector on the K2 and wire it to the battery through a fuse. The =
controller is a switch that connects the solar panel directly to the =
battery through a power FET until the battery voltage reaches 14.0 =
volts. Then it turns off the panel for a rest period and waits for the =
battery to drop about 100 mV before it turns back on. The result is a =
pulse width modulated charging current with about a 4 second repetition =
rate. This controller works similar to the MicroM+ controller that was =
in QST about a couple of years ago although the circuit and IC I use is =
completely different. It does not generate any RF noise and will work =
with a panel size from 3 to 200 watts and any size SLA or wet cell =
battery of either 12 or 6 volts. The circuit board is 2X3 inches and the =
kit has all the parts needed to build the controller. I have =
instructions and application notes in the kit. The kit is $30 check or =
money order.=20

Don Brown
19132 Falls Creek Drive
Flint, Texas 75762

Thanks

Don
  ----- Original Message -----=20
  From: n3drk<mailto:[email protected]>=20
  To: elecraft<mailto:[email protected]>=20
  Sent: Tuesday, February 10, 2004 4:03 PM
  Subject: [Elecraft] solar panel controller


  Anyone have a source for a solar panel controller for the K2 battery? =
2.9Ah.
  Powersonic recommends not more than 580mA. I  have one which puts out =
4.5A!
  Glad I found that soon enough.
  73's
  john


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