Search results

Has anyone tried these? Do they work? I have a 15 degree roof, but even my near vertical pv's get dust buildup, then lichen takes a hold.

Hi Warpspeed These came today, slowly getting there. What are the Mosfet's spec? & what is the diode spec? thanks

Headlines over the last few days, the world is awash in it. Thailand unearths huge lithium deposits China discovers 1-million-ton lithium mine, largest in Asia China Could Control a Third of The World's Lithium by 2025

Ok, thanks for your patience, I'll just post the 1st corrections below & work with your suggestions tomorrow. I'll replace the older version to avoid anyone using it.

Glad you picked that error up, I can't believe how I missed it, good thing my 1st Pcb was a miss. "But what is D2 ?" Won't I need a Blocking Diode? (To stop the battery discharging through the pv's at night).

So I'm onto my 2nd pcb, (seems better to lay out the tracks by hand, less error). But I'm not sure where to end the "large tracks". I have used <<<<>>> on the image below to denote large tracks. Do I need more large tracks, such as the Battery track? or more from the bucks or Earth? Thanks

Amazon outside of the states is too expensive re postage. So Ali is my cheapest option, most of the brands mentioned above aren't available there. Having spent loads of time seeking teardowns reviews on utube, Below are the most recommended brands I found, all others on Ali seem utter junk...

kinda unrelated, but how good are these electric sit on mowers? I know Ryobi is a cheap brand but <3 years of battery life seems a bit poor. I have a large area to mow, looking at sit on (prefer robotic), seems like a no brainer to upgrade to an electric, any recommendations?

Hi, just wondering if I need a diode for each string, between the (Battery or) Mppt & panels? I can see one on the (external part of the) circuit diagram, but not sure of its purpose.

Just starting to explore buying some batteries, cheapest for me would be alibaba. I can't match any of the brands Dave listed from amaz. Daweikala lifepo... AU$48.59 AU$52.82-8% Extra 8% off with coins New 12V 20Ah 50Ah 100Ah 150Ah 200Ah LiFePo4 Battery Pack Lithium Iron Phosphate Batteries...

Got deleted with the resistors, it should be right now. Thanks

I've updated the schematic (edit corrections). Should I add any pins for easy testing on the IC or any of the circuits?

great, thanks for that.

MPPT ANALOGUE ~1KW Warpspeed That's the search tittle of the file on easyeda.. After many nights, I have (maybe)finished the 1st stage 3 more to go, (probably take as long, good learning process). http://www.evankrall.com/posts/jlcpcb-smt/ Design your schematic. X Lay out your PCB. Fill out...

Hi, Just before I order the chokes, would I be better getting the 500UH/20A, wire diameter 1.4mm*2, rather than the 300UH/25A, wire diameter 1.6mm*2? Same shop similar cost. Higher Amps or higher uH?

So why aren't you using an open source Linux os?

AU$31.16 / lot (2 Pieces) Free postage High Power Inductor 100uH~1mH~5mH Grid-connected Inverter, PFC Coil Color: 100UH 30A 5MH 5A 4MH 8A 3MH 8A 2MH 10A 1MH 12A 700UH 15A 500UH 20A 300UH 25A 100UH 30A...

Would this work? 300UH/25A, ? Description The magnetic ring is selected with an outer diameter of 47mm, an inner diameter of 24mm, a height of 18mm, and a magnetic permeability of 125 060 models. The 77438 and 77439 series of iron-silicon-aluminum magnetic ring inductors are selected, which...

Bi-polarized “nichicon MUSE” acoustic series 22uF 16V ±20% Plugin,D6.3xL11mm Aluminum Electrolytic Capacitors - Leaded ROHS

Unfortunately they didn't stock those, just the 100v (6 cents each I think) & others. "So my panels are 38v in series of 3 = max 114v, so I should be able to use the same resistor values as you?"

Novice Note; Wasted a lot of time trying to id the voltage for a given capacitor on Easyeda parts search "JLCPCB assembled" function. The voltage is in code (on the part #), the code index didn't come up on a basic search. Most common parts available on "JLCPCB assembled" are made in China...

Not sure on this, So its not a problem leaving the resistors in, but it may work better with out them? But they may insure there is no "feedback instability" which is unlikely anyway. I don't mind having them for insurance, but if it operates better without them. How would I recognize "feedback...

So if I use a lithium ion 48v batt. sys. A quick search indicates max charging voltage of 57.5v (58v). R8 will always be 5K1 = 5 volts. RV2 will be 10K giving ten volts of adjustment range. R4 will be 45K ?? adding 45 volts on top of RV2 and R8. Minimum battery adjustment range 5v + 0v (pot at...

So my panels are 38v in series of 3 = max 114v, so I should be able to use the same resistor values as you?

Easyeda "JLCPCB assembled" parts available (in stock) for C2, C4, C5, You recommend 10nF polyester 50v, Closest I could find there are 10nF polyester 100v. See below, will they be ok? (I can always buy 10nF polyester 50v separately & solder them in. But the more they can do the better.)...

Probably a dumb question, is that your BMS? & why is your fan so big?

Awesome thanks. Close to finishing the 1st stage of 3 with easyeda, though pcbway is having a 50% Xmas discount on boards & added components. I think once you get familiar with the program it should only be a 10 minute job (stage 1), beginner ~ >10 hours.

Hi Warpspeed I'm adding the capacitors to the Pcb (eda), (so many choices) from your image, I can't id which C# is ceramic & which C# is maybe polyester, electrolytic etc. Can you possibly take some more pictures from different angles, hopefully showing the C# on the circuit board? Or...

yeah it was on their list, hopefully its a real Texas, it's going to take some nights to get use to the program, lots of good video tutorials.. Prefers latest chrome or firefox, otherwise its clitchee to unusable.

Thanks, I seem to be on track, I'll use it, if its on the list.

I recently ordered a batch (alibaba) huge variation in component ratings, but all have the same spec's. I'm using EasyEDA for the PCB & probably the parts, (its cheaper than buying a breadboard, its also a really good learning aid, & I can run simulations on the design there, & the PCB design...

Just wanted to be sure before ordering, your link & others on ebay.com have them rated as "Input voltage: AC 85 ~ 265 v 50/60 hz or DC 100~ 370 v." Does that mean my input has to be >100V? ( just got a tin/cu 6mm x 100m roll of solar cable, so got plenty & I should be able to do series of 3 x...

This thread has been an interesting read, seems every step in contemporary pv's has issues. The mc4's seem ideal for isolating & testing & ease/speed. But how long will they last on a roof in all climates/temperature swings? what are the seals going to be like in 10 - 20 years? Neoprene &...

But if your paneling your home, you probably have heaps of space (different case for a yacht etc), I don't really see the gains in grabbing a few % in gains from an expensive mppt, when for the same extra cash you can add several more door size panels.

do you know what brand that is?