Return to Answer

Your land line.

There is about 48V available on any land line in your house. Lots of bad articles on the internet about this, though this seems to be the best I've seen.

http://www.edn.com/design/power-management/4315670/Get-power-from-a-telephone-line-without-disturbing-it

Part 68 of the US Federal Communications Commission's telecommunications regulations states that any device that connects to the phone line and is not actively communicating must present a resistance of at least 5 MΩ

...an image from the article listed above... http://www.edn.com/ContentEETimes/Images/EDN/Design%20Ideas/Get_power_from_telephone_line_without_disturbing.gif

Your land line.

There is about 48V available on any land line in your house. Lots of bad articles on the internet about this, though this seems to be the best I've seen.

Part 68 of the US Federal Communications Commission's telecommunications regulations states that any device that connects to the phone line and is not actively communicating must present a resistance of at least 5 MΩ

Your land line.

Lots of bad articles on the internet about this, though this seems decent.

http://www.edn.com/design/power-management/4315670/Get-power-from-a-telephone-line-without-disturbing-it

Part 68 of the US Federal Communications Commission's telecommunications regulations states that any device that connects to the phone line and is not actively communicating must present a resistance of at least 5 MΩ

...an image from the article listed above... http://www.edn.com/ContentEETimes/Images/EDN/Design%20Ideas/Get_power_from_telephone_line_without_disturbing.gif

Your land line.

There is about 48V available on any land line in your house. Lots of bad articles on the internet about this, though this seems to be the best I've seen.

http://www.edn.com/design/power-management/4315670/Get-power-from-a-telephone-line-without-disturbing-it

Part 68 of the US Federal Communications Commission's telecommunications regulations states that any device that connects to the phone line and is not actively communicating must present a resistance of at least 5 MΩ

...an image from the article listed above... http://www.edn.com/ContentEETimes/Images/EDN/Design%20Ideas/Get_power_from_telephone_line_without_disturbing.gif

Your land line.

Lots of bad articles on the internet about this, though this seems decent.

http://www.edn.com/design/power-management/4315670/Get-power-from-a-telephone-line-without-disturbing-it

Your land line.

Lots of bad articles on the internet about this, though this seems decent.

http://www.edn.com/design/power-management/4315670/Get-power-from-a-telephone-line-without-disturbing-it

Part 68 of the US Federal Communications Commission's telecommunications regulations states that any device that connects to the phone line and is not actively communicating must present a resistance of at least 5 MΩ

...an image from the article listed above... http://www.edn.com/ContentEETimes/Images/EDN/Design%20Ideas/Get_power_from_telephone_line_without_disturbing.gif