I did some research on this a while back, and one thing I learned is that a switching regulator is more efficient than a linear regulator, which may be important to you in this case if battery or energy production capacity is a concern. You probably don't have to worry about low voltage because you will have a low voltage disconnect method to protect the batteries that is well above the 20V mark. Since your bulk charging setpoint will likely be a bit higher than the maximum 28V specification, you will need to do some sort of regulation.
Here is a short tutorial on DC-DC converters that I found helpful: http://www.altera.com/support/devices/power/regulators/pow-regulators.ht ml Jason Szumlanski Fafco Solar From: [email protected] [mailto:[email protected]] On Behalf Of All Solar, Inc. Sent: Thursday, November 03, 2011 6:27 PM To: 'RE-wrenches' Subject: [RE-wrenches] Voltage Regulator Hello, I have a client running wireless comm. equipment that he would like to run from a 24vdc battery bank. Even though it will operate either 12vdc or 24vdc, he would like to maintain 24vdc +/- 4v. Any ideas out there would be helpfull. Jeremy All Solar Inc. Jeremy and Amy Rodriguez 1463 M St Penrose, CO 81240 www.asolarelectric.com Phone 719-372-3808 Fax 719-372-3804 Email [email protected] Email [email protected]
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