Electrical Engineering Stack Exchange
Electrical Engineering Stack Exchange

Questions tagged [router]

40 questions
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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 capable of 24V 20A which is connected to a solar…
rej
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UPS for home router

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 annoying. What I'd like to do is have (cheap) UPS only…
Oxmaster
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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?
fer
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How can I add a USB port to my router?

I want to add a USB female adapter to my Xiaomi 4c router. It has 5V, 1 ampere input. I did some research on it. They say that I need to add a 15k ohm resistor to it. Here's the circuit diagram for USB: It needs a 3.3V input. Where can I find a…
Riasaat
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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 the "black pointy things attached to home routers"…
Terminus Technicus
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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 can be reprogrammed to act as a central device…
Sensors
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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

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, would my powerbank be able to power this router? How…
Gerjan Eigenraam
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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 battery) and load will be at relay common pin.
Zoals
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How are LAN routers, WAN routers and eNodeBs connected to each other (TCP/IP)?

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 packets to the correct destination with a routing…
qwerty_99
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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 and over again even though in the end the…
user116345
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replacing ceramic capacitors in a wifi router

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 which have burst and on further inspection it also…
Apache
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Help me identify this unknown SMD transistor

Could you help me identify this transistor? I have searched every SMD code decoder and can't find the exact type of this transistor: It apparently has CCE1X written on it, and has a SOT-23-6 package if I’m not mistaken. It’s part of a router main…
Nandosuke
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SMT component marked 1917C GM4YD identification

Does anyone recognise this SMT component marked 1917C GM4YG? It's in the power input circuit for a 12 V, 1.5 A DC external power supply in my ZTE MC801A 5G modem/router. The 5.5/2.1 DC socket was broken, unfortunately something else is broken also…
Waldemar Bęben
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Will I risk damaging my dual-band router if I use 2.4G antennas?

I lost the antennas to my dual-band wifi router (2.4G/5G). Do I risk damaging the router if I install 2.4G antennas?
jackson.c
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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 new to electronics, i know i maybe asking stupid…
SAM
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