This is the second run at an effective high side (switch the positive side of the panel outputs instead of the negative side) MOSFET panel driver. I designed one that works that I use but it can only be switched at about 200Hz or less and really works best as just a switch. What I have now adds a voltage follower to the circuit as well as a voltage divider paired with a 12 Volt Zener diode to control the Vgs effectively. I had to abandon the dream of doing high side switching on an N-Channel MOSFET (they are cheaper and have far better performance that P-Channel). So I'm back to the P-Channel and the heat they bring. Higher RdsOn ratings for P-Channel's means higher resistance and more power lost to heat. Currently my answer for this is to make it switch as cleanly as possible then put in a big heat sink. There's a lot of information about this circuit on several threads on All About Circuits Project forum. Thanks to all there who helped out. The basic design is from Sgt. Wookie.
http://forum.allaboutcircuits.com/showthread.php?t=52037
http://forum.allaboutcircuits.com/showthread.php?t=40334
http://forum.allaboutcircuits.com/showthread.php?t=44277
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Expanding on the collection of heat from the sun, there are power plants in the hot sunny desert areas that collect the heat from the sun and convert the heat to electricity.
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