Questions tagged [router]

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Which resistor will reduce 5V 2.5A to 5V 2.3A in a parallel connection? For Chinese router [duplicate]

I am working on iot project, and I have a problem. There's a router mi 4c (Chinese version). It used to start working only from outlet adapter. I tried using powerbank, accumulator (with 12V to 5V ...
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1 answer
53 views

What does T designator means in PCB?

I know Tdesignator normally means transformer, however i found t9 and t10 connected to a routers USB data line from ground. They could have been diodes for protection but diode's designator is D I am ...
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-3 votes
1 answer
71 views

Can I use a 5G antenna on my 4G router and get 5G speeds or do I need a 5G router [closed]

I have a Huawei B535 4G router at home. The SIM card sitting in it and the subscription also supports 5G. Will it be enough to just add an external antenna like this one: https://triax.com/shop/en/o5a-...
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0 votes
1 answer
59 views

Repair USB on ASUS router [closed]

I have the following problem: The USB 3.1 female input on a ASUS RT-AX58U router was mechanically damaged (blue plastic bar.) I had taken it to a repair shop. They gave it back, claiming it's ok now, ...
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  • 109
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1 answer
40 views

Can I power a router that requires 12V-DC via a 5,5mm input by using a powerbank that can output 12V DC over USB [closed]

I have a powerbank that can output 5V-3A/9V-2A/12V-1,5A over USB. The router I would like to power came with a 12V-1A adapter and uses less than 12W. If I were to buy a USB to 5,5mm adapter cable, ...
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0 votes
0 answers
94 views

How to upload new firmware to Ralink RT5350F board

I took apart old Edimax SmartPlug (model SP-1101W) to find out that the brain of the device is Ralink RT5350F chip conviniently placed on removable module board: The board has two rows of 14 pins (28 ...
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0 answers
64 views

UPS for WiFi router (automatic switching between battery and DC adapter )

I want to make a UPS for a WiFi router. Following is the schematic I am thinking to implement. My idea is to implement the following: The input DC adapter will provide power to the two converter ...
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  • 41
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1 answer
143 views

Problem with using power bank for modem with dc dc booster

I want to run a modem that needs 12 volts with a power bank. I've used a DC-DC booster to increase the voltage of my power bank which is 5 volts up to 12 volts and there is no problem with that. After ...
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0 votes
2 answers
324 views

Should I wire my CNC limit switches as NC or NO?

I built a CNC router about a year back and have had intermittent limit switch triggering for a good while. After doing everything I could to remove any EM interference from the system (run the signals ...
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0 votes
1 answer
85 views

Could power cycling a modem 24 times a day for over 3 years (>30,000 times) cause the modem to lose its settings? [closed]

Could power cycling a modem 24 times a day with it being on for 10mins at a time for over 3 years (>30,000 times) cause the modem to lose its setting and revert to factory? This modem.
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0 answers
195 views

4g router not working after powering it with a 12V battery

I needed to power a Huawei router with a 12V power supply as this will be living in my garage where there is no power available. My current setup is a 12V car battery hooked up to a small fuse box. I'...
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1 vote
0 answers
112 views

Home Router - How do routers use multiple antennas and MU-MIMO?

I have few practical questions regarding classic home routers like TP-Link Archer C2 or modern AX10. I welcome longer explanations if it's necessary. Which type of antennas do home routers use? Are ...
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1 vote
1 answer
246 views

Relay not switching immediately if mains off to battery like UPS

Relay not switching immediately if mains off to battery like as backup power. I'm looking for zero cross SPDT relay switching for my project. please help. design is simple two power sources (mains and ...
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0 votes
2 answers
214 views

LED indicators intensity standards

I am trying to find any resources on the LED parameters (i.e. preferred intensity and luminosity ranges) that are used as indicators in various home appliances, such as Networked devices (i.e. routers)...
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3 votes
1 answer
175 views

Will this DC UPS with off the shelf components for home network and laptop work?

I am trying to build a DC UPS to power modem, router which have power requirements of 12V 2A and a laptop which has power requirement of a 20V 3.5A. I am planning to use a AC to DC SMPS which is ...
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  • 31
0 votes
1 answer
91 views

How does a router send different data to different devices simultaneously?

How does a WiFi router send different data to different devices at the same time? Since all devices connected to it pick up the same signal being emanated by the router, how do they get the data meant ...
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-1 votes
1 answer
605 views

What will happen, in my router, if I connect 9V, 0.85A Power adapter to a 12V, 1 A adapter slot? [closed]

I have NETLINK HG323RGW GPON ONT Router, it uses 12V,1A, AC-DC power adaptor. ( Power consumption ≤9W ) I also have TPLINK ADSL Router which uses 9V, 0.85A power Adapter. ( https://www.tp-link.com/...
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1 vote
1 answer
78 views

How are LAN routers, WAN routers and eNodeBs connected to each other (TCP/IP)? [closed]

I'm new to telecommunication, and from what I understand, an user equipement is either connected to a LAN router or an eNodeB, and a LAN router is connected to a WAN router, and routers send the ...
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0 votes
1 answer
58 views

High bulk capacitance (100.000 uF) discharge time on Wifi router supply

I want a WiFi router, those supplied with 12V x 1~1.5A AC-DC wall adapter, to remain ON for a short time (maybe one second or a little more) after the AC mains gets its energy interrupted, when AC ...
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0 votes
1 answer
50 views

How many routers can the Powerbank power and how long?

I have a power bank, Capacity: 27000mAh/99.9WH Input: 19V/1.6A AC output: 220V/50Hz 100w Max Router (MR600) Input: 100-240v 50/60hz 0.6A output 12v 1.5A
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-2 votes
1 answer
132 views

What's the difference between ethernet and serial cable?

I am confused about the difference between ethernet and serial cable? Do they do different things or not? If so, what's the difference? Also, I would like to know the cable that is suitable for long-...
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0 votes
0 answers
179 views

How to connect to the PCB of an Alcatel Linkhub HH40

I recently bought an Alcatel Linkhub HH40 4G router. Unfortunately, the web interface doesn't provide the functionality I was hoping for (e.g., automatically disabling the radio functionality over ...
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0 votes
1 answer
101 views

How to extend router wire?

I have a router with 2m wire, and it would be really useful to extending it a little. I was thinking about cut in somewhere and add 2 'nipple' (not sure if proper word) to connect them with new 3m ...
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0 votes
0 answers
36 views

Connecting a 12v router to a 12v battery [duplicate]

can I connect a 12v router directly to a 12v battery which normally will be at 13-14v (because most of the time it’ll be charging)? The router is a TP LINK Archer MR200 rated at 12V 1A
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0 votes
1 answer
252 views

5 seconds power supply backup for 12V 0.5A router

My country has a problem with the mains electricity supply, which cuts off and comes back straight away. My router restarts every time that happens. What I like to know is: What would be the most ...
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0 votes
0 answers
43 views

What happens if I use a 1A power supply in a router that requires 1.2A? [duplicate]

I have this d-link router, it's original power supply was 5V and 1.2A, but I found a 5V 1A supply. It is working, but does it represent a risk to use it? What could happen?
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0 votes
3 answers
2k views

Powering a router with a USB power bank [duplicate]

I have a usb powerbank(w 1.1 & 2A outputs) and I would like to power a router since I have no access to a power source. My issue is the least I've seen routers rated for are 9v min. usually 12v. ...
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  • 101
3 votes
2 answers
1k views

UPS for home router [duplicate]

Sometimes we have power outages that last about 100 ms that are long enough to discharge capacitors inside router, when that happens we need to wait about 10-15 minutes for DNS, which is pretty ...
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0 votes
2 answers
428 views

Why do ADSL router capacitors bulge after a few months?

This commentator writes: if the modem is many years old, the capacitors can leak electrolyte and go out of spec and instead of just blocking the 'low notes' of a telephone conversation, it might ...
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0 answers
3k views

Arduino TTL level converters 5V -> 3.3V

I am trying to interface a WRT54G serial port directly with an arduino pro micro's hardware UART by connecting RX to TX and TX to RX between the devices. I have a simple code running on the arduino ...
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  • 69
0 votes
4 answers
419 views

What is this amber like substance on capacitor and inductor?

What is the mysterious substance on the inductor and (failed) capacitor? What is its purpose, and how do I replace the failed capacitor with it there? The substance is hard and translucent, but I can ...
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0 votes
2 answers
498 views

Questions on powering a router with 9V alkaline battery

I have a Linksys router which I want to power with batteries so it can be a portable router. The original power supply for the router is rated 12V DC 0.5A maximum. I've tried powering the router with ...
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  • 101
1 vote
2 answers
1k views

How to prevent eagle from attempting a specific route?

I'm using the eagle autorouter to route my PCB because it makes cleaner tracks than if I did it myself. One problem I have is that sometimes it insists on attempting to make the same connection over ...
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1 vote
1 answer
1k views

replacing ceramic capacitors in a wifi router [closed]

We had a thunderstorm a few days ago and our Asus DSL-N14U modem router stopped working. I opened it up and as far as I can see everything on the PCB is in good shape except two ceramic capacitors ...
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  • 31
0 votes
1 answer
94 views

Connecting 12v 1A device [duplicate]

I have a 12V 7Ah battery can I directly connect it to my device having rating 12v 1A? Will my device extract 2.25 amp current as it is betterys initial current or it will only extract 1 amp current. ...
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3 votes
1 answer
147 views

What punch down tool should I use on this ethernet jack?

As you can tell this does not have the vertical lines like a regular keystone jack. So i was wondering what punch down tool should i use? ...also what are these called?
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2 votes
2 answers
197 views

Bluetooth based Sensors to the Cloud, processor choice?

This is a pretty broad question, but I'm curious to hear how people would go about this and what parts they would use to do the heavy lifting. Imagine you had a bluetooth module, it works fine and ...
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