This isn't a really a uninterrupted supply, the device will restart when switching happens. This can also be achieved with a 12v relay and a Diode only.
Okay. So I see a problem. The product description says the the the same voltage is required for the power supply, the battery and the load for this work. But a 6v battery requires a higher voltage for it to charge - 7.5 to 8 volts. Then the battery supplies 6volts to for example a 6volt Lighting circuit - the Load. How can this work then if the voltage must be the same for the supply, the battery & the load? The battery won't charge and will eventually go flat if this is the case. What are solutions so you don't have to keep changing the battery?
Hey Ahmad :D I've been waiting for this kind of module! Thanks for sharing that is a good news. Don't hurt yourself on the ice ;) Happy end of the year !
Thank you for this extensive review. Please review this module XH-M350, which do the same thing and explain why It does not contain a diode to protect from reverse voltage spike (Back EMF) caused by relay's coil. Are the capacitors in it do the job?
Oh Ahmed...I listen for the quality information given in your videos; but I watch for the entertainment value (smoking output wires at beginning of video) 💪😅
You are welcome. The best thank you for me is to subscribe to my channel. Your subscription is stamp of approval and my videos will be suggested to more people and this will help me. I appreciate it. thanks❤️
Very good information. Im hoping YX-850 will work with a device Im working on that needs pass through charging. at only 5v for YX-850 to work, a 2S lipo battery at 7.4v should be just enough to get the switch to work fine when the battery is needed.
As you said , switching of RELAY take .6 second, so it not ideal to use for microcontroller board. because everything time RELAY switches , it will reset the microcontroller. How we can remove this problem ? do we need to use can big capacitor ? or can RELAY be replaced with any MOSFET or SSR ?
Really good review, I have a 48V battery but its nominal voltage and its full charge is around 54.6V, does the YX850 can handle that voltage for the battery and charger?
I've been waiting for this module for almost 2 weeks which the seller took 5 days to ship out! but he sent me the wrong version which i didn't actually need a charging feature. i noticed both the positive inputs are connected via a diode. if my assumptions are correct, if i remove the diode it will no longer charge my batteries but won't affect the UPS feature? and also, can we add a capacitor on the output to make the relay switching seemless?
@@robojax I didn't find the video. Can you tell me correctly? Or comment what the name of the module is? Sorry for the trouble and thank you for your attention.
I have the 801. Can I simply add a diode to have the 850 version? If yes, what type and specification of diode to be used with an 8Ah Lead Acid battery?
Thank you very much for your educative video ,but I've a qn for the ac side, can I connect 240v ac directly (without using adapter ) , ie live and neutral instead of +ve and -ve
Hey Robojax! I've been following you in your YT Channel quite recently. I just wanna know if there's a power switching module that has minimal delay in it? I'll be using this to power my router 😃 Some other says that I could add in a capacitor to kill the delay? But I am not sure if that's a safe approach for this kind of load since the router is running for 24/7. Let me know your thoughts please. Thank you
Hey, the cheapest way you o remove delay is to just add capacitors. That is the case where a mechanic switch such as relay is used. Depending on the load (router in your case) starry with for example 1000 microfarad and test it and add more in parallel to that capacitor until you get uninterrupted result.
@@robojax Hey man really appreciate your response! I am not that geeky with this kind of stuff but I have the basic knowledge. I made a visual plan on what I wanna build. I hope you can check it out and hope you can chime in and let me know your thoughts if it's feasible and can withstand the 24/7 use as it's intended for a wireless router. Also can you please check if the placement of the capacitor in the image is correct? Here's the image/visuals: bit.ly/3M6u61h I hope this will work as intended so I can start building it. Excited to build this actually :) Thank you so much for your help!
For yx x801 u said that the load should only be between 12v to 48v but you also said that the ac power will also be directly supplying the power to the load with the same voltage? That means at the output there would be 220v when on main power supply i.e ac? But the load needs only 48v?
to decrease the drop we can add a capacitor, right? any suggestion what kind of Capacitor would be best suited (like a minimum value, i know it will vary based on loads) I am just curious
Are you asking about the time between power loss, and the relay switching? One amp = 1 coulomb per second. And one Farad = 1 coulomb per volt. C = Q/V and Q = I*t. So one farad will drop 1 volt per second per amp drawn from it. C = I*t/V. If there's 0.2 seconds between power loss and the relay switching, and the load draws 1.5 amps, for a 2 volt drop you'd need 1.5 * 0.2 / 2 = 150 milliFarad. This is a massive capacitor. I think this module is really only valuable in situations where total momentary power loss is acceptable. Or for very low current draw devices. Maybe a 12V device running at 100 mA can accept a 1V drop, so 0.1*0.2/1 = 20 mF. Still a large capacitor, but more in the realm of possibility.
Thanks for this video. Any new module which has uninterrupted switching? One suggestion needed from you. I have lfp battery ups 20v 4amp. And currently using with diode mbr20100ct from charger (cc cv module) to battery to stop reverse flow from battery to charger. Till now it works uninterruptly perfectly without any problem. Added some fuses at input and battery output. So is it safe to use only with diode or should i add some switching circuit?? Please reply. Thanks for your time.
if you module has CC feature, the battery is protected with you set Voltage constant. Now you have the diode, you should be good. to charge the battery fully, there is a voltage of about 0.6V or more drop across diode, keep that in mind and added that to the CV so the full voltage reaches the battery. you should be good specially you have also a fuse. stay safe.
Can I use a battery pack which has a BMS attached? Let's say a 3S BMS and with a 12.6V CC-CV charger as the power supply? Load is a wireless router rated @ 12V. Let me know. Thanks!
@@robojax Yes because i need to use first battery then later the dc (i have hybrid solar system) and when the batt is finished i want to use the DC supply
sorry but what can i use for the battery to not over charge or drain empty? for safety purpose if i leave it for long or use it for a automatic emergency light . thank you
it depends on how many battery and how much current you want to work with. here is a system for 2 cell 18650 battery ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-vQIsc8-Uoio.html
Hi, the battery always needs charging voltage. if you supply voltage higher than the battery rated voltage, the batter will get damaged. this module can facilitate connecting the the load and the battery.
as I mentioned. this is mechanical device. The only way to eliminate the off time, is to have enough power for the load. Find the total equivalent resistance of the load R=V÷I, V=voltage, I=Current. if you found R=0.1Ω then The 𝜏=RC where is C is capacitance in Farad and 𝜏 is time in Seconds. , get C=𝜏÷R, and if you want to get 𝜏=0.7 for example, then C=𝜏÷R=0.7÷0.1=7F, and 7 Farad is equal to 7000μF. So would need 7000μF capacitor to be connected to the load to keep it the voltage to 63% of the original voltage. if load voltage is 10V, then it would keep it at 6.3V for 0.7 seconds. if you want to increase the time, then increase the capacitance. it would be HUGE capacitor the voltage rating of capacitor should be the voltage of load. Let's see if it works for you.
I made a similar relay module. I added a small capacitor 1000uf at the output. It became uninterrupted. The capacitor should just be enough for that millisecond of switch
@@ktestable wow, that's what I wanna try as well, what's your load current and voltage? I want get rid of restarts for my router 12V 0.5A when switching to battery, can you suggest a capacitor please?
this does not. it will disconnect only when the power is OFF. you should have your own charger. Use this instead ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-iM9oMdNBX1o.html
I mention all voltage and capability. if your solar panel is within the voltage range yes it will work. by the way it seems you have written your name is reverse. I assume Rizvi is your last name, then it should be second like Ahmad Rizvi. Many people in Indian, Pakistan and Bangladesh think the name order is being reversed when you write it in English which is not true. Biden is the US president's family name. So it is written Joe Biden NOT Biden Joe.
وعلیکم السلام، چون ریلی ها معیاری هستند. وقتی از 10 آمپر بگذریم به 30 ویا بالاتر میروند اما بصورت ماجیول عرضه نشده اند. یک را دارد و آن اینکه بطور موازی به ریلی شما یک ریلی دیگر را لحیم کنید که بدریخت میشود اما وظیقه را انجام میدهد. سلامت باشید
Power supply just provides power. Charge checks the voltage and current of the battery and change them in order to charge the battery properly and protect it from getting damaged.
@@robojax so if I want to use this board as UPS for IP camera I have to use 12V battery + charger , and not just power supply. or maybe use battery with charge protector .
@@robojaxcurrently in India we are not getting orders shipped from china as the Indian post disposes all the chinese shipment packages because of ban and in custom tax section writes that it was disposed because of public safety which is clearly vague and i dont wish to loose more money in this process. So if some kind man from Internet provides me schematics of this relay i could locally buy all parts and components like 12v relay for 1 dollar 7 pieces and make diy stuff for myself
Hello sir good Video I have a question about esp32 i want to make an auto switch between battery an dc power i have used this x804 ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-XA8qaMbrQ6Y.html but like it said in the video it have 700 ms beteween the 2 state and the esp32 reboot how can i do for the esp32 do not rebbot
