These are used but are said to be really well made and from the USA: https://gogreenmansolar.com/product/sunpower-435-watt-mono-solar-panels-27-per-pallet-free-shipping/ On sale they seem a good deal
David, The PV modules themselves are not noisy - from the ad you linked it does not appear that the pallet of panels is accompanied by an inverter or micro-inverters. The PV modules generate DC - it'
I had read somewhere that diodes in the panels could sometimes go bad and get leaky or something. OK, so as long as RF doesn't get into the connecting wires the panels back to the controller should b
David, The bypass diodes built into the modules can go bad (either failed open or failed shorted), but this failure mechanism would not create RFI from the DC output of the module. PV modules with fa
On 8/27/2021 6:24 PM, Michael Carter wrote: The PV modules themselves are not noisy - from the ad you linked it does not appear that the pallet of panels is accompanied by an inverter or micro-invert
I had read somewhere that diodes in the panels could sometimes go bad and get leaky or something. I have a panel in storage that has SOME sort of issue. I notice the battery on it kept going dead, so
My post was to correct the mis-statment that the output of a panel was DC and thus not a cause of RFI. Indeed, it is NOT DC, it is a pulse train with very fast rise and fall times, thus consisting RF
Jim, No disagreement that charge controllers, not just the inverter portion of a PV system, are RFI generators. The ad linked by KD4E was for a pallet of PV panels, which are devoid of any power conv
That's true ONLY if they are not used with a charge controller. Doing so is a great way to destroy your battery by overcharging it. Charge controllers prevent that. 73, Jim K9YC _____________________
Agreed, Jim - we are on the same page regarding need for good, quiet charge controllers if a battery-backed PV system is planned. 73, Mike, K8CN ________________________________ From: Jim Brown <jim@