Buck Gizmo Test Results
This test was to see how much the amps went up at the output of the buck converter compared with the input amps. This is the gizmo again: http://www.ebay.com/itm/DC-DC-15A-Converter-Buck-Adjustabl...
Forum Discussion
I don't have it set up anymore to try that, but that procedure is not any good for my purpose anyway. I thought it would work like a solar controller does in PWM.
How can a solar controller, which is a buck converter (AFAIK) do this and my gizmo can't? The gizmo bucked the voltage ok but just passes through the same amps. Similar to a PWM controller on a 12v panel that bucks from 21v to Vbatt but passes panel Isc through as amps EG you get the 8.2 amps from the 130w panel going to the battery.
In this case, "panel" voltage was 27v and 2 amps and output was 2 amps at Vbatt. So it was like the buck converter for a 12v panel except with higher intake voltage but not like the one for a 24v panel
With the solar controller for a 24v panel which also has Isc of 8.2 amps, you get more amps than the panel's Isc, almost twice the amps. EG my 230w with the controller gets say 15 amps to the battery.
You just set the Vabs on the controller and let her rip. No need to keep the high set point just above the battery's voltage to get your jump in amps.
What is in or with the solar controller's buck converter for a 24v panel to let it double the amps going from 24 to 12v that my gizmo rated for up to 32v intake doesn't seem to have?
How can a solar controller, which is a buck converter (AFAIK) do this and my gizmo can't? The gizmo bucked the voltage ok but just passes through the same amps. Similar to a PWM controller on a 12v panel that bucks from 21v to Vbatt but passes panel Isc through as amps EG you get the 8.2 amps from the 130w panel going to the battery.
In this case, "panel" voltage was 27v and 2 amps and output was 2 amps at Vbatt. So it was like the buck converter for a 12v panel except with higher intake voltage but not like the one for a 24v panel
With the solar controller for a 24v panel which also has Isc of 8.2 amps, you get more amps than the panel's Isc, almost twice the amps. EG my 230w with the controller gets say 15 amps to the battery.
You just set the Vabs on the controller and let her rip. No need to keep the high set point just above the battery's voltage to get your jump in amps.
What is in or with the solar controller's buck converter for a 24v panel to let it double the amps going from 24 to 12v that my gizmo rated for up to 32v intake doesn't seem to have?
