DIY Hacks & How To’s: Emergency Power from a Land Line



What do you do if the power is out, but you need to charge your cell phone to make an emergency phone call? In this episode of DIY Hacks and How To’s, Jason Poel Smith shows you how to tap into a land line. Read all about it at http://makezine.com/2013/05/06/how-to-get-emergency-power-from-a-phone-line/ and check out the complete how-to at http://www.instructables.com/id/How-to-Get-Emergency-Power-from-a-Phone-Line/

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39 thoughts on “DIY Hacks & How To’s: Emergency Power from a Land Line

  1. Anne S September 25, 2017 at 5:54 pm

    I don't think I'll be able to do all this before the hurricane Irma

  2. VTwin4Christ September 25, 2017 at 5:54 pm

    Attention irma hurricane folks

  3. Kingseeker GAMING September 25, 2017 at 5:54 pm

    Have a land line
    has a Phone
    has a Dead cellphone
    Uses Landline to charge the cellphone to make a emergency call

    Oh, the irony

  4. dtg616 616 September 25, 2017 at 5:54 pm

    Or get in your car and buy a plug in for sig lighter

  5. dtg616 616 September 25, 2017 at 5:54 pm

    I just buy a shit ton of moble chargers

  6. Dr Poo September 25, 2017 at 5:54 pm

    Great video, I made one and it works

  7. Steve Baker September 25, 2017 at 5:54 pm

    Rofl using the phone line to charge the mobile so you can use it to make a call……

  8. Maignanamgnanavel Maignanam September 25, 2017 at 5:54 pm

    the input of 50v is directly to 7805, but 7805 is taken the input of maximum 7v then how it's possible

  9. Jay Robbins September 25, 2017 at 5:54 pm

    What are the other sources of power that you refer to at the start?

  10. DarklingGolem50 September 25, 2017 at 5:54 pm

    why am i watching this. i have a VoIP

  11. Ryan Yablow September 25, 2017 at 5:54 pm

    Does the line have to be hooked up through the phone company, or any standard jack will do/ recieve current, even if its not paid for/set up as in like having a phone number for the jack?

  12. NumaticVacuum September 25, 2017 at 5:54 pm

    Or you could just plug a telephone into the line…

  13. Andrea pescador September 25, 2017 at 5:54 pm

    it dosent work 🙁

  14. xBLACKxOPSxSECRETSx September 25, 2017 at 5:54 pm

    what if I stopped paying for phone service a few years ago Will it still work

  15. Dan Kirchner September 25, 2017 at 5:54 pm

    wats a landline ?lol

  16. Ty Hare September 25, 2017 at 5:54 pm

    If you actually had to make an emergency call why wouldn't you just use the landline phone instead of plugging a cell phone into it😂

  17. Milk Parker September 25, 2017 at 5:54 pm

    This is useless because I have a modem that puts out the power to the phone line. If no wall power then no phone power.

  18. KB_Playz September 25, 2017 at 5:54 pm

    USB Killer as a dead drop xD

  19. Niko September 25, 2017 at 5:54 pm

    if i put a invertor 48v to 110ac before invertor a resistor so i will not pay eletricity

  20. Aisha Love September 25, 2017 at 5:54 pm

    This is highly illegal and if they catch you the penalties are really damn steep and can even lose you your internet service if you use idsn or dsl.

  21. Power Max September 25, 2017 at 5:54 pm

    Based on your data I figure you can achieve optimal power at 26V @ 41.4mA, if you feed that into a small switching buck converter, that should ideally yield 5V with as much as 215 mA of current available. Assuming 90% efficiency, that drops to about 193mA. Much better than your 7805 regulator.

  22. Naufal Aziz September 25, 2017 at 5:54 pm

    awesome, thanks for making this tutorial

  23. Oskar Balcerzak September 25, 2017 at 5:54 pm

    Buck converters are more efficient.

  24. Nekowafer September 25, 2017 at 5:54 pm

    Ok so ur saying unplug your home phone, make an adapter, and then charge your smart phone with that? Why?

  25. XPGaming September 25, 2017 at 5:54 pm

    Just use a power bank!!!

  26. Tyler Smith September 25, 2017 at 5:54 pm

    Surely you would just use the desktop phone if there is power through the phone line

  27. b0rd2dEAth September 25, 2017 at 5:54 pm

    I needed to know how much voltage is passed across the 56kb line, looked everywhere for that information.. Glad to have found it here. 0:33

  28. 1David leonard September 25, 2017 at 5:54 pm

    who's watching this when there power is out and like

  29. fardin ahmed September 25, 2017 at 5:54 pm

    how can I save my phone from any kind of damage what should I use from any kind of damages

  30. fardin ahmed September 25, 2017 at 5:54 pm

    Will this be dangerous for battery or any of short circuit or any of damage to phone

  31. Thushara Fernando September 25, 2017 at 5:54 pm

    does the voltage regulator used here has the same effect as a buck coverter, for example if a 9v 100ma is reduced to 5v , then you can get 0.180 ma, is this the same with the voltage regulators, i thought that they just drop the voltage by wasting power? simply does it honour the v=i*r ? sorry for my bad english.

  32. bestjunky September 25, 2017 at 5:54 pm

    A thing to keep in mind is that plugging any non-FCC certified device into a phone line is illegal in most states. If you happen to blow the circuit, not only will you be on the hook for repairs – you may get sued. With a hack like this it's unlikely you will cause damage, even if you short the connection. However if you try, say, making a custom phone line interface, a makeshift dialer or some sort of home automation gizmo where phone company can detect signal deviation and figure out what you're doing – you'll be in trouble. Just a word of caution.

  33. JonasLue September 25, 2017 at 5:54 pm

    75 ma (it was?) will never be enough to charge a phone until the power goes on again. And I dont mean until 100%, even 1% won't be working and if, it'll take forever. A phone needs at least around 400ma to effectively start charging. It maybe displays that it is, but you're not getting far with that

  34. Alex's Tech September 25, 2017 at 5:54 pm

    What diode do I need? I can only find Zener diodes in my local store(0.5w and 1.3w)

  35. Hindustani September 25, 2017 at 5:54 pm

    Awesome

  36. Elixi Bizkaia September 25, 2017 at 5:54 pm

    Can I power my adsl modem from phone line?

  37. Corey Mcniel September 25, 2017 at 5:54 pm

    I made it by myself. I used inplix scripts for that.

  38. hansonsux September 25, 2017 at 5:54 pm

    This is bullshit because we're talking 50ma at best down to 5v. The problem with it is that the phone's charger/power ic will have difficulty working with such low current availability, let alone how much current is left for the battery? That is if you can keep the screen off the whole time.

  39. kulgan96 September 25, 2017 at 5:54 pm

    there must be some irony charging your cellphone with the landline

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