40amp @ 24 to 220 VDC SSR $15

Xringer · 11-28-11, 06:27 PM

Found these on Ebay..
Solid State Relay SSR 5-220V DC, 40A + Heat Sink | eBay

I have one connected to my 115Vdc 7A (800W) solar PV array.
It's control comes from a square wave generator.
When it gets sunny again, I plan test difference frequencies & duty-cycles,
to see if there is a sweet spot frequency that will give max output power.

Testing today with a 3500 uF cap across the PV, at 4-5 amps (overcast)
was pretty good. No excessive heat.

I can't wait to see if the output can get up near the full 800w..

11-28-11, 06:27 PM	#1
Xringer Lex Parsimoniae Join Date: Feb 2009 Location: Woburn, MA Posts: 4,918 Thanks: 114 Thanked 250 Times in 230 Posts	40amp @ 24 to 220 VDC SSR $15 Found these on Ebay.. Solid State Relay SSR 5-220V DC, 40A + Heat Sink \| eBay I have one connected to my 115Vdc 7A (800W) solar PV array. It's control comes from a square wave generator. When it gets sunny again, I plan test difference frequencies & duty-cycles, to see if there is a sweet spot frequency that will give max output power. Testing today with a 3500 uF cap across the PV, at 4-5 amps (overcast) was pretty good. No excessive heat. I can't wait to see if the output can get up near the full 800w.. __________________ My hobby is installing & trying to repair mini-splits EPA 608 Type 1 Technician Certification ~ 5 lbs or less..