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Xringer · 12-06-11, 07:53 PM

The amount of current is limited by the PV panel ratings.
My CS6P-200 panels will not put out more than 7 amps.
So, that the limit of the amperes, according to Ohms law..
But, the voltage available from 4 panels in series (@7A) is 115.6 VDC.. (abt 800w worth).

This circuit isn't my invention, I'm just copying part of a standard MPPT circuit.
Only, I'm using manual 'tracking', to optimize delivery of power from my PV to the 10 ohm load.

Before the SSR died, I was able to get it working a bit.
I had a 60 watt light bulb(120V) connected in parallel with my 10 ohm load.
And with the right duty cycle (about 30% I think) it would really light up the lamp nicely,
even when the sun wasn't that strong.
Which kinda made me think the bulb was seeing some pretty good voltage (and power).

So, I don't have a problem with the circuit not working, my problem is the burned out SSR..

Not to worry, they are sending me a new one..

12-06-11, 07:53 PM	#8
Xringer Lex Parsimoniae Join Date: Feb 2009 Location: Woburn, MA Posts: 4,918 Thanks: 114 Thanked 250 Times in 230 Posts	The amount of current is limited by the PV panel ratings. My CS6P-200 panels will not put out more than 7 amps. So, that the limit of the amperes, according to Ohms law.. But, the voltage available from 4 panels in series (@7A) is 115.6 VDC.. (abt 800w worth). This circuit isn't my invention, I'm just copying part of a standard MPPT circuit. Only, I'm using manual 'tracking', to optimize delivery of power from my PV to the 10 ohm load. Before the SSR died, I was able to get it working a bit. I had a 60 watt light bulb(120V) connected in parallel with my 10 ohm load. And with the right duty cycle (about 30% I think) it would really light up the lamp nicely, even when the sun wasn't that strong. Which kinda made me think the bulb was seeing some pretty good voltage (and power). So, I don't have a problem with the circuit not working, my problem is the burned out SSR.. Not to worry, they are sending me a new one.. __________________ My hobby is installing & trying to repair mini-splits EPA 608 Type 1 Technician Certification ~ 5 lbs or less..