Review and demonstration of a Boost/Buck Converter Cc Cv Power Module 0.5-30V 6A 60W
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- čas přidán 17. 03. 2022
- I did some demonstrations and tests with this adjustable regulated power supply with LCD display. The display shows incoming Volts, outgoing Volts, Amps, Watts, Temperature. Output voltage undependable of the input voltage, higher or lower, no problem. Other buck converters may of course give other specifications and performance results. Be aware that if you want to use it as a charger, the output of the model needs to be protected against incoming voltage. Check the description in the advertisement of the product before you buy.
Good review! Thank you.
Thank you for letting me know!
I agree. Anything helps since no included instructions. Somehow mine won't change any settings and the green light flashes no matter what I do. All I can do is wonder, whazzat? Perfectly frustrating.
You're soo smart.. I'm buy one
Thanks for the compliments! I use this Buck converter for several applications now.
What do you mean when you say 'protection against incoming voltage'?
Incoming from what :where?
Do you mean wrong polarity?
Thank you for asking Greg! Normally, a power supply is intended to deliver power from the output contacts. When you use it as a charger, it is possible the battery that is under charge, delivers voltage to that output contacts. Not all power supplies accept that and will be defective. The one I showed aloud voltage coming from the wrong direction. I hope this explanation clears it up.
@@chrix2381 thanks for the reply. I understand now.
Would inserting a diode in the output prevent the problem?
I have just put together a charger for a battery to power a UPS. I used a very cheap (€2.66) voltage /current driver to regulate it.
I noticed that it was feeding back to the PSU as the indicator light remained on when the power was off.
So far it has not let the smoke out.
@@gregculverwell Hi Greg, to me it looks for your configuration that a diode will indeed do the job to prevent flowing back current to the regulator. You will have some voltage drop (0.7 Volt for a silicium diode) but likely no problem if you can adjust the regulator. And of course the diode must be able to handle the current.
@@chrix2381 thank you.
is this converter suitable for water electrolysis and can the voltage and current be adjusted?
The voltage and current can be adjusted. I don't know about electrolysis.
@@chrix2381 OK thanks
I did the same thing you did in the video but for a 3v 600mA trimmer. I adjusted it for 3v the short circuited it and put the A to 0,598 (my voltage did not go to zero but to 0,29 or something) then I connected the trimmer, but it reads 3.00V output with 0,000A, the charging light of the trimmer goes on, but shouldn't there also be at least some current?
Ok, I turned the trimmer on and let the battery drain, now I put it back on the device, it reads 3,00V and 0,007A, but while typing the current went down to 0,000A already.....
What am I doing wrong?
If I turn the trimmer on while charging, the amps climb up quickly to about 0,450A, then when I turn it off, the current drops to 0,017A and then slowly goes back to zero.
Is this the right way? am I charging it efficiently?
Allright, I switched the polarity of the OUT cables and now there's some amp flow (0,040A) Getting less now... 0,015A
it seems to be charging though, but the amperage is only 0,017A until I turn on the trimmer, it quickly climbs to the max current of 0,598A.
So... I guess it works now?
Thanks for asking Wilbur. I am not sure how the trimmer is charged normally. Certainly not with 3 Volt if the battery is 3 Volt. The result then will be what you experienced: no current flowing because there is no voltage difference. You should know what the maximum current is that is aloud for the trimmer.
You mention that the voltage of the trimmer is 3 volt. In case of Nicad or Nihm batteries the voltage per cell is 1.2 volt so I do not understand how they become 3 volt…
To know what is inside it is likely enough to open the trimmer and identify the batteries.
The total voltage is the sum of all batteries together.
The charging current of NiCad or Nihm batteries divided by 10 is in most cases applicable.
The maximum charge voltage is a normally a few tenth above the nominal voltage, per cell.
So short circuit the power supply and adjust the voltage to the maximum charge cell voltage.
Then turn the current up to the maximum current.
Then connect the plus pole of the power supply to the plus of the trimmer and the negative pole to the negative connection. Don’t switch polarity!
Then current should flow, first about the maximum and when charged more, the current will slowly drop.
If this is not the case, likely (one of) the batteries is (are) defective.
Take care if you are not shore what you are doing, depending on the sort of battery (LiPo) it could result in a very unsafe situation (even explode).
Good luck with this and let me know if you have more questions! (providing the model trimmer could be helpfull)
@@chrix2381 Thx for the help Chrix, I don't know how much volt the battery is. On the trimmer it says DC IN 3V, so I assume that's the required input voltage?
But just to be sure I took it apart an looked at the batteries, there were two 1,2V batteries indeed, hence the input voltage should be 3V ; slightly higher than 2,4V.
It was such a hassle to put the thing back together that I forgot which type of batteries they were. But I believe NiMH.
Ok, so I double checked the polarity this time, then watched the first 6 mins of your video again. And did everything as you did (but with the 3V 600mA).
A strange thing I noticed is that your voltage goes down to zero when you short circuit it, while mine just drops from 3V to 0,6V (with the current going up to the max)...
Ah just found out it is because of the resistance in the wire I use to short it....
Before starting the project I found that the trimmer had a 15 min run time. As it was charged then, no idea if it was full. I will now let it charge on the converter and see how much it charges in one hour.
The current is still only 0,009A which seems a bit low? Voltage is now 2,99V
Ok, it has been charging for just some minutes but the current already went down to zero... there's obviously something wrong..
If the charge voltage rise while the current drops, I would say it charges.
However, if you charge with 600 mA the battery is likely 6000 mA (6A). That means the charging time would normally be 10 hours. So a much longer time then the hour you mention. Or it was not completely discharged?
What voltage do you measure on the charging connections of the trimmer after disconnecting the charger? If it is about 2,4 Volt it means at least that you have no short circuit in one of the batteries (often happens).
I agree something is likely wrong. Could it be that the batteries have become bad? In that case they could be replaced?
How it. Cost. This. Convector?
Hi, I copy/past the description of the profuct on the website of AliExpress and there are many different models offered. The model I describe in the video but with the FAN cost €14,43. including tax and shipment. It is found at nl.aliexpress.com/item/1005002938439853.html?spm=a2g0o.productlist.0.0.ac301c61Abn1Df&algo_pvid=90e1d503-9c1e-4323-8eed-297e6e61ddec&algo_exp_id=90e1d503-9c1e-4323-8eed-297e6e61ddec-8&pdp_ext_f=%7B%22sku_id%22%3A%2212000022877830629%22%7D&pdp_npi=2%40dis%21EUR%21%2114.43%21%21%21%21%21%400b0a119a16578704559385540eb669%2112000022877830629%21sea I did not see the one without fan (as I have) but also many others are offered. Good luck with defining the one you need!
next time ,usea screw river in adjusting the trimmers .......................
Thanks for sharing this!
Kijk, dit is nou waar ik naar op zoek was! Hiermee kan je dus eigenlijk zo'n beetje alles opladen in je auto toch? bijvoorbeeld je laptop aan een autoaccu, ideaal!
Klopt! Wel opletten dat de spanning niet te hoog wordt ingesteld, op de voeding van de laptop is de benodigde spanning (en stroom) vermeld.
Klopt het dat er relatief weinig energie verloren gaat aan hitte? als je het bijvoorbeeld vergelijkt met een stopcontactomvormer voor in de auto waar je je normale laptopsnoer in zou doen.
@@chrix2381
Het betreft een geschakelde omvormer die uiteraard nooit een rendement van 100% kan hebben. Of zo'n omvormer warm wordt is inderdaad een goed indicator. Deze heeft een heel klein koelplaatje dat amper warm wordt.
Als de spanning eerst in een stopcontactomvormer naar 230 VAC wordt gebracht en daarna met een normale laptop voeding weer naar laagspanning DC is er uiteraard dubbel (en dus meer) verlies.
@@chrix2381 Dat was inderdaad mijn overweging om dit dingetje te kopen, nou schijnt dat hij wel heet kan worden, ik heb per ongeluk degene zonder ventilator besteld maar die zal er wel niet voor niks bij zitten. Heb je een idee wanneer hij heet begint te worden?
@@WilburCobb-mp9vt Ik heb ook degene zonder ventilator. Het hangt er natuurlijk vanaf hoe lang je hoeveel vermogen 'opstookt'. Het rendement is best goed, gewoon proberen zou ik zeggen.
it is like you are in boat.. camera swimming all over the place.. can't keep watching, i might get sea sick.
Thank you for your feedback. I know what you mean by sea sick. I will try to be more stable and (if possible) make use of a tripod. However, I already published several video’s after this one so hopefully you see already some improvement.
@@chrix2381 Wishing you all the best. Thank you.