I have used these modules in many of my projects and I surely recommend these. In one of my projects, this ran consistently for over 6 months with no signs of heating or any other issues. As long as your requirements are within the specified limits, it is a reliable choice.

@robojax

8 ай бұрын

Indeed they are good quality. I hope the fake of these do not show up in the market.

One way you could make your videos more useful, is to provide links to the devices and products you use. You have a lot of good content. Good work and thank you!

@robojax

5 жыл бұрын

Thank you for remind me. I have done that for all product and forgotten that. I just put it.

i was about to buy one of these. thank you for your review

@robojax

5 жыл бұрын

You are welcome. This is amazing hardware and easy to use. I will be using it from now on.

Excellent video, thanks for your efforts. 😊

@robojax

2 жыл бұрын

Hello, if you want to promote your products, contact me via robojax.com contact page and provide your email in the message . We can cooperate.

I really currious about this step down AC-DC converter because of it's small size, and in this video the output voltage looks good, i might buy one and use it as a handy power supply to charge my 1s lipo on the go

@robojax

5 жыл бұрын

I have tested them and they are very good.

Thanks for the info.

Pretty good video Test. But I suggest you test the ripple level at the next time! Some additional test could be load the power supply under high temperature environment. Thank you a lot!!!

@robojax

3 жыл бұрын

Great point!

Good video, basic operational tests, output ripple would have been but another youtube video shows about 50mV... now I don't have to test mine.

Very good review, thanks! 36 / 5000 I want a Rigol to test my load :)

@robojax

3 жыл бұрын

😂

this is a wonderful diy AcDc example... the data sheet-sheet shows using a common-mode-choke feeding the AC input... what are your thoughts when the AC is in a factory with lots of vfd inverter motor drives? thanks...:)

@robojax

3 жыл бұрын

The wining of this is optimized for 50Hz and 60Hz. Change of frequency should not affect the output much. I am not sure if the output is so tuned perfectly for 50Hz. try it.

Hello, I'm attempting to create a home automation project. I will be inserting the hi-link with the controller in the light interruptor, the problem is that, The light interruptor has 2 cables, 1 for 127V and the return cable. How would I be able to make the connection with Hi-Link?

@robojax

3 жыл бұрын

Hello, I have no idea what. Hi link is. This has input and output which I have explained

thank you for the video, i want to make a home automation project and i still don't understand why don't we use a phone charger instead?

@robojax

3 жыл бұрын

Yes use it if you have one.

Just wondering if there's anything like this that accepts 3-phase AC input and still supply the same 5 VDC output?!

@robojax

Жыл бұрын

hi, I have not see it but it may exist. Just connect this to Neutral and one of the phase, it should work.

thank you. I was wondering if these were real or fake/unsafe off Aliexpress. Looks pretty good 👍🏻Did you notice any heat?

@robojax

3 ай бұрын

The the link to purchase from Hi-Link store is in ththe description. Make sure to buy it from the manufacturer store on Aliexpress.

do they make 120/220 volt AC step down to 3 volt AC...I really need this

@robojax

4 жыл бұрын

as the title says "DC" it outputs only DC regulated voltages.

THANKS LET US KNOW ABOUT THE INTERNAL CIRCUIT AND COMPONENTS PLEAS IN OTHER VIDEOS

@robojax

Жыл бұрын

you don't need to know what is inside. otherwise the manufacture would have left if open to see. Contact them if you want to know for some reason.

Hello Sir, Hope you must be having good experience about usage of this MODULE for your microcontroller PROJECTS. I wish to know your recommendation about using this MOUDLUE to POWER-UP any microcontroller like Arduino ? Can I use it for my microcontroller module ? ( Any advantage or disadvantage of using it ? Is there any noise issue etc etc ?)

@SandeepKumar-qh3zs

8 ай бұрын

You can use this for microcontroller projects. There is one thing that you can do to make sure that your microcontroller works perfectly during the start up transition (as the output voltage rises slowly), is that you can set Brown-out detection. The brown out detection will keep resetting your microcontroller if the voltage is not within a set limit which prevents code execution. This feature is available in most microcontrollers including the atmega series microcontrollers. Refer the datasheet for it.

Voltage monitor device is custom built?? Please provide details. Looks portable and handy

@robojax

4 жыл бұрын

sorry I did not understand the "voltage monitor" if you want to know the voltage, then you need to connect voltmeter. is that right?

How did you wire the converter to the AC cables which are shown in 2:08 ?

@robojax

3 жыл бұрын

Perhaps you skipped. It has bee fully explained and then connected. So if you don’t listen to explanation you won’t understand

@85Johanf

3 жыл бұрын

@@robojax oh yeah, see it now at 3:45 . Yes, I did scan trough the video and missed it Thanks

Can I use these as an alternative for my usb android phone charger? If yes, which one?

@robojax

4 жыл бұрын

I have explained the current. these are with maximum of 5W. Watt is power P=IV where I is current (A) and V is voltage. So for USB charger which is 5A I=P÷V=5÷5=1A so it will output 1A and it would be very slow. Most changers are rated 2.1 or higher for fast charging. Yes it will work if you can wait twice as long.

hello sir, do I need to add additional components like a varistor and fuse in the input side of this Hi-Link, or it is good to go to power up the microcontroller and relays? I really appreciate any help you can provide.

@robojax

10 ай бұрын

You don’t need anything. Just use it

@NEWBI3GAM1NG

10 ай бұрын

@@robojax Thank you sir

Is this supply module can carry a load of 1 Node MCU and 4 channel relay module?

@robojax

2 жыл бұрын

NodeMCU needs about 100mA and each relay needs 80mA so 4 relay x 80 + 100=320+100=420mA is what you need. I have mentioned how much current this power supply can supply. Solved.

@anokhautomation4453

2 жыл бұрын

I can't find this power supply module in Dubai local market.here is only available the HLK-PM01 -220V to 5V 3W Switching Power Supply Module.i checked the details of this module only can carry 600mA. Anyway.thanks for your valuable reply.

Can I split the 220 voltage on several hi-link ac/dc module

@robojax

2 жыл бұрын

If you connect them in series yes and the output will be decide by the number of module you connect in series. If you use a 5V module and connect two in series then the output will be 2.5V for each

hi , please can you help me use Arduino to measure ac voltage with HI-Link AC to DC 5V, converter

@robojax

3 жыл бұрын

Hi, for high voltages we can use a bridge rectifier to convert it to DC and measure any DC voltage with Arduino like this kzread.info/dash/bejne/pmys2dSPmpXHdtY.html , for low AC of low voltages less than 20V, it is not that simple because bridge rectifier has voltage drop and we need to use opamp to convert it to DC and measure accurately. I don't have any video on measuring AC with Arduino for the above reasons. ***** Free Arduino Course worth $200**** Arduino Step by Step Course (over 150 lectures) Starts here robojax.com/L/?id=338

Great video, I wonder how to convert one of these modules to a USB charger?

@robojax

4 жыл бұрын

thanks. You need to get charger module from eBay and connect the output of this to the charger. I would have to make a video on that.

@hossamsaad3903

4 жыл бұрын

@@robojax thanks for the fast reply. It would be helpful to do a video on this.

@robojax

4 жыл бұрын

You are welcome.

Can I connect the output from this directly with a 12V relay? Is there any other circuits required?

@robojax

3 жыл бұрын

if you use 12V version, yes connect it directly to 12V relay to power it up. Nothing else is needed.

@jithup.s4220

3 жыл бұрын

Thank you

@robojax

3 жыл бұрын

you are welcome.

Can i use hilink module as a 3.3-5v input to arduino digital pin ?

@robojax

10 ай бұрын

of course yes.

serves as a bell button? I mean, is the current flow instantaneous?

@robojax

2 жыл бұрын

I believe yes. Look at my test and see if there is any delay.

Salam, can I use 3.3v module directly to ESP12E ESP8266…?

@robojax

Жыл бұрын

Yes of course

Do these work with 110V AC power too? I'm in the USA.

@robojax

Жыл бұрын

I have mentioned all specs and tested it. Don’t remember anything just watch yo get answer. If not 120V is not mentioned then it is not working.

I bought a few of these from AliExpress. They seem to work ok but I do have concerns about safety and build quality. Are there problems with fakes out there? How can I tell if they’re genuine?

@robojax

2 жыл бұрын

But it from the manufacturer AliExpress store. They have store

This module have reverse polarity protection ?

@robojax

3 жыл бұрын

This is AC to DC , there is no polarity when you connect AC

Thanks, how does it run hot or warm? And can it run 24/7?

@robojax

5 жыл бұрын

This is what I have explained in the video.

@MerinKumar

5 жыл бұрын

@@robojax sorry, but I dint get that info.... if it can run 24/7 from the video...

@robojax

5 жыл бұрын

You have to test it for 24 hours.

i bought theses hi link power supplies yet non of them are able to charge my iphone, why is that?

@robojax

Жыл бұрын

what is the voltage of the module? did y ou pay attention to the power? 5W. if it is 5W and 5V, then you should know the current is 1A. as 5W÷5V=1A. and 1A charge is very slow. but if you got the 3.3V, it will never charge your phone.

@robojax

Жыл бұрын

You didn't reply aso that which module you got? 3.3V, 5V or 12V?

These are useless for esp32 applications because of their important ripple... Unfortunately I had to learn that myself as nobody mentions it.

I tested a 5V and a 15v, at the voltmeter you do not see the noise generated by the switching power supply, on the 5v 100mv of 100hz with intermodulations of some kHz, for the 15v it's worse, peaks to 700mV! Depending on the environment it is not desirable to use these converters!

@robojax

3 жыл бұрын

That’s good to know if you measured it. Thanks for sharing.

@vincentvidal3305

3 жыл бұрын

@@robojax Here you can see snaps for +5V & +15V, +5V & -15V and AC : dl.free.fr/iQcHF7g2R (Only 30 Days ! )

It's not obvious how you are testing the resistance between ac input and the dc output, but it looks like you're using a normal multimeter. They will only test resistance with around a volt, so do not show whether the insulation will break down when high voltages are applied. Mains voltage can be very noisy depending on where you live, but you ought to expect the possibility of short voltage spikes of up to a kilovolt. Insulation resistance testers are available that will subject a text item to that sort of voltage in order to determine whether insulation will break down with high voltage. These are often called "meggers" and you can get a cheap one for around £20, which is enough to determine whether a potted device like the ones you are testing will provide good insulation or "flash-over" on a voltage spike with potentially disastrous consequences.

@robojax

3 жыл бұрын

Hi Rex , thank you for bringing excellent point. No I have done mentioned resistance test. I will consider that in the future review. I should have cut this open and shown the guts of it. Thanks and stay safe

Not open the module?

@robojax

3 жыл бұрын

no. it is sealed and should not be opened.