Wireless Router Power Help.

[Dracoola]

Consider this scenario

There is a wireless router that needs to be kept powered up continuously. It has to remain ON without power interruptions.

The requirement is to only run ONE device for at least 2 – 4 hours at times without power interruptions.

UPS and Generators would cost a lot. The cheapest UPS is 4000 and I don’t want to invest that much just to keep a router working through load shedding.

Are there any cheap/alternate solutions for this problem?

 

[Ali Kamran]

well a friend of mine who is studying engineering used to power the router in his hostel dorm by some batteries and stuff. You might find something on the net about it.

 

[devnull]

Consider this scenario

There is a wireless router that needs to be kept powered up continuously. It has to remain ON without power interruptions.

The requirement is to only run ONE device for at least 2 – 4 hours at times without power interruptions.

UPS and Generators would cost a lot. The cheapest UPS is 4000 and I don’t want to invest that much just to keep a router working through load shedding.

Are there any cheap/alternate solutions for this problem?

Only a UPS will do here. And a computer UPS at that. Any other type of device, such as a desi inverter, will be too slow at switching between AC and backup battery i.e. the "transfer time" will be too high causing your router to reboot. So a computer UPS is the only option.

May I ask why it has to be powered up continuously? I mean most download software can resume downloads from where they were interrupted so temporary disconnections aren't a big deal. They shouldn't be anyway.

 

[shad0w]

Good idea!.. If it's 12v you can try powering it from a 12v battery and a small battery charger connected to the battery to keep it charging when the light is on. Will probably try this myself too.

 

[devnull]

What happens when the power comes back on? Changing from battery to mains power will surely cause the router to reboot. It'll be a hassle as well when you have multiple power cuts during the day and NIGHT.

 

[Dracoola]

well a friend of mine who is studying engineering used to power the router in his hostel dorm by some batteries and stuff. You might find something on the net about it.

This seems like a good place to start. Will look it up.

Only a UPS will do here. And a computer UPS at that. Any other type of device, such as a desi inverter, will be too slow at switching between AC and backup battery i.e. the "transfer time" will be too high causing your router to reboot. So a computer UPS is the only option.

May I ask why it has to be powered up continuously? I mean most download software can resume downloads from where they were interrupted so temporary disconnections aren't a big deal. They shouldn't be anyway.

What happens when the power comes back on? Changing from battery to mains power will surely cause the router to reboot. It'll be a hassle as well when you have multiple power cuts during the day and NIGHT.

If there is a cheap solution that doesn't require reboot then I'll be glad. Otherwise I'd have to deal with the switching of power source.

Well.. hmmmm. How about a switch? An on-off button that transfer the power source?. It doesn't necessarily have to be absolutely continuous. I suppose a button that alternates between the power sources would suffice.

and NO UPS man!. Too much investment for this sort of thing.

 

[Dracoola]

What kinda battery should be looked into if one is trying to build an experimental power source??

 

[Newton]

do u know that there are almost 50Vs available on a telephone line....using a simple voltage regulator circuit u may be able to run ur router.....what are the router's voltage and current requirements?

 

[Dracoola]

do u know that there are almost 50Vs available on a telephone line....using a simple voltage regulator circuit u may be able to run ur router.....what are the router's voltage and current requirements?

ehh.. That's a good idea.. Given it works right and the router doesnt go KABOOM. or the phone line dies.

I have a Wateen Wireless Router

and one LINKSYS E1000 WIRELESS N ROUTER

will have to check up on the power circuits and requirements.

 

[Newton]

it would me written on its adapter something like
input:100-220....etc
output:12V/100mA....etc

and there are less chances of the router going kaboom more of the telephone line going kaboom but that would just be a telephone complaint would be fixed in a day

 

[GrunT]

Only a engineer here can help you, what I would do is buy a rechargable light, break it a part, figure out which part of it controls on/off on power outage and income and use that part to gain the function of auto switching from battery to main and from main to battery. (Only if I knew which part of the circuit board does this)

You can get something like this made from Cooperaty market in Saddar if you're in Karachi though you would require searching around to find some one who is willing to make. I got a magnet electric generator made for science expo when I was in grade 6

 

[Dracoola]

it would me written on its adapter something like
input:100-220....etc
output:12V/100mA....etc
and there are less chances of the router going kaboom more of the telephone line going kaboom but that would just be a telephone complaint would be fixed in a day

I have exquisite experience in stuff going KABOOM in my hands, under experiments and trying to "fix" things. So yes, I have to maintain that and remind my self not to blow shit up.

Only a engineer here can help you, what I would do is buy a rechargable light, break it a part, figure out which part of it controls on/off on power outage and income and use that part to gain the function of auto switching from battery to main and from main to battery. (Only if I knew which part of the circuit board does this)

You can get something like this made from Cooperaty market in Saddar if you're in Karachi though you would require searching around to find some one who is willing to make. I got a magnet electric generator made for science expo when I was in grade 6

Cooperative FTW baby! I've got tons of stuff made from there and yes it is a good place to start. Chances are I can get a voltage regulator circuit made.

Sounds like a plan. I HOPE it works. I need to get my hands on some expendable devices to do some experimentation first.

P.S. Anyone who can add anything relevant to this topic would be appreciated. Any alternate yet uninterrupted power solution is most welcome.

 

[Newton]

goto the shop and tell them that u want them to make a power supply circuit which would power ur device, tell the device's ratings i.e. the ones mentioned on the adapter and tell them the input ratings of the power supply; that would be the voltage available on a telephone cable. The only thing here is that the max current available on a telephone cable should be enough for the rated current mentioned on ur adaptor otherwise u wont be able to use this scheme. If i had a meter with me i would have measured it for u; on the other hand if u have a meter u can check it ur self.

-> if u have a resister -> take a telephone wire from any point in ur house and connect the resister to it and note the voltage across it. now u can find the current with the formula

current = voltage measured / resister value.

this current should be a little more than the one mentioned on the adapter. If yes then ur good to go
have any questions? post em!

 

[Dracoola]

goto the shop and tell them that u want them to make a power supply circuit which would power ur device, tell the device's ratings i.e. the ones mentioned on the adapter and tell them the input ratings of the power supply; that would be the voltage available on a telephone cable. The only thing here is that the max current available on a telephone cable should be enough for the rated current mentioned on ur adaptor otherwise u wont be able to use this scheme. If i had a meter with me i would have measured it for u; on the other hand if u have a meter u can check it ur self.

-> if u have a resister -> take a telephone wire from any point in ur house and connect the resister to it and note the voltage across it. now u can find the current with the formula

current = voltage measured / resister value.

this current should be a little more than the one mentioned on the adapter. If yes then ur good to go
have any questions? post em!

Few questions tomorrow when I'm done testing the wire and the router power arrangement.

MORE questions when I'm back from Cooperative, probably this saturday.

If this works out, we should share the sacred information and delete this thread. Because if the word got out that you can power up stuff with telephone wires, there's gonna be telephonic load shedding. ha!

Thank you for your help. Much appreciated

 

[Newton]

If this works out, we should share the sacred information and delete this thread. Because if the word got out that you can power up stuff with telephone wires, there's gonna be telephonic load shedding. ha!

i guess some people know that already

 

[shad0w]

the telephone doesn't give fixed voltage, it spikes when the phone rings, is different when the phone is in use and when in idle. Also it messes with the dsl connection so probably a no go.

The circuit inside the rechargeable battery is basically the same as i described earlier. Since it's 12v on the inside and uses 220v to charge the battery. The Router would be constantly powered by the 12v from the battery and when there is electricity the battery would start charging, no need for switching as the the adapter of the router would not be needed anymore.

 

[Newton]

the telephone doesn't give fixed voltage, it spikes when the phone rings, is different when the phone is in use and when in idle. Also it messes with the dsl connection so probably a no go.
.

That's why i said to get a power supply circuit, it handles the spikes and gives a smooth and fixed output; but still lets see...

 

[Dracoola]

Yes yes...I'll get to it as soon as I can.