The efficiency, ripple and precision of the SK120X 120W power supply (PART III)

[@Luke-san]

Thank you for the tests. Seems to be approximately the same as I measured today when full sun on my panels and I could use to charge some batteries. I also have a Victron but still need to buy Lifepo4 battery. I was pushing like 80 Watt into a Powerplus battery and the module got really hot. Loss was about 17% so about 14 Watt of heat! My advisory is when you put it in an enclosure to put 2 fans in it. One that pulls air in on 1 side and 1 that blows air out. If you only do short high power or just like 10 Watt 1 fan will be enough but I would highly advise it. And thanks again for this really good test!

[@FVEBlog]

Thanks for advise.

[@q12x]

Fain ! Am o ideie pt testul care l-ai facut pt curent. Ai testat mai intai curent mare de 1A (la 11:23) si la 2A. Asta inseamna ca rezistentza/shuntul de pe care citeste el curentul, posibil sa se fi incalzit. Apoi, foarte repede ai testat pt curenti mici, acel 120mA care la DMM-uri arata corect pt ca is calibrate mai bine, iar la cel mic era 113mA. Ma gindesc sa lasi sa fie rece indeajuns aparatul, si sa faci proba de la mic la mare, adica mai intai la cur mici si apoi la cur mari. Ca ideie creatza. Se mai poate sa fie si de la IC-ul lui, cum e programat si at n-ai ce-i face. Da poti testa teoria mea ca e simplu si vz daca is toate 3 la unison cit is reci.

[@markf1441]

@@q12x Temperatura 👍!

[@pascalfiabane]

super video, danke

[@FVEBlog]

Thank you! I am glad that I have followers from Switzerland. 😃

[@markf1441]

Mă miră faptul că are eficiența de doar 81% cand e folosit ca și coborător gen 24v la 12 sau 12 la 9, iar apoi eficienta spre 85 %cand e pe boost . Era interesant să fi avut și un senzor de temperatura pe radiatorul lui . Oricum " e ce trebuie" , bun !👍

[@FVEBlog]

Sincer... nu m-am gandit pe moment sa arat pe clip si temperatura acelui radiator.

[@markf1441]

@@FVEBlog după ce am citit și comentariile @q12x , m-am gandit și eu la monitorizarea temperaturii .

[@mariangeorgescu5476]

Cine vrea precizie baga multimetrul.In rest este ok sursa.Multum pentru prezentare.La mai multeee...

[@irfantat6918]

The efficiency of such devices is important when used with batteries. Efficiency is not very important in home use. Batteries are usually around 12 volts. Therefore, it is necessary to measure the efficiency when the input voltage is 12 and by decreasing the output voltage and then increasing it. You did not do this, you made a ridiculous efficiency measurement.

[@mikrandr]

You are right, it would be good to see the effitiency when lowering voltage, he did this only for 24V input. There are 9V and 24V batteries. I use 9V battery for similar mobile power supply.

[@FVEBlog]

I measured/calculated the efficiency with the input at 9V, 12V and 24V, and the output at 12V, 18V, 24V, 32V and 36V.