Bears OLB Leonard Floyd (concussion) is listed as doubtful for Week 17. As fellow OLB Pernell McPhee (shoulder) was listed as questionable after not practicing all week, the Bears may be without two of their top edge pass rushers against the Vikings.
Solar Controllers. In a solar thermal system, the controller measures the temperature of the solar collector and one or more points in the storage tank and then powers the circulation pump(s) and motorized valve(s).
Which solar charge controller: PWM or MPPT? What follows is a summary of our white paper with the same title. For the full white paper, see: Which solar charge controller: PWM or MPPT? in the White papers section of our site. 1. The PWM controller is in essence a switch that connects a solar array to a battery.