![power supply - 3 wires on a (bipolar) DC plug - what are they for? - Electrical Engineering Stack Exchange power supply - 3 wires on a (bipolar) DC plug - what are they for? - Electrical Engineering Stack Exchange](https://i.stack.imgur.com/iPDt4.jpg)
power supply - 3 wires on a (bipolar) DC plug - what are they for? - Electrical Engineering Stack Exchange
![K-MAINS 90W AC adapter CHARGER power cord for ASUS U52F-BBL9 U53JC-B1 U43F-BBA5 U43JC-X1 - Walmart.com K-MAINS 90W AC adapter CHARGER power cord for ASUS U52F-BBL9 U53JC-B1 U43F-BBA5 U43JC-X1 - Walmart.com](https://i5.walmartimages.com/asr/19c219bb-31dd-4682-8082-4d4a3494da0c.00e0be02bbd81fa8e64561a5f013a713.jpeg)
K-MAINS 90W AC adapter CHARGER power cord for ASUS U52F-BBL9 U53JC-B1 U43F-BBA5 U43JC-X1 - Walmart.com
![Amazon.com: 45W AC Adapter Laptop Charger Compatible for HP Notebook 15 Charger 15-ba009dx 15-ba079dx 15-ba113cl 15-bs015dx 15-bs113dx 15-bs115dx 15-bw011dx 15-bw032wm Laptop Notebook PC Power Supply Cord : Electronics Amazon.com: 45W AC Adapter Laptop Charger Compatible for HP Notebook 15 Charger 15-ba009dx 15-ba079dx 15-ba113cl 15-bs015dx 15-bs113dx 15-bs115dx 15-bw011dx 15-bw032wm Laptop Notebook PC Power Supply Cord : Electronics](https://m.media-amazon.com/images/I/41eAAeY2O-L._AC_.jpg)
Amazon.com: 45W AC Adapter Laptop Charger Compatible for HP Notebook 15 Charger 15-ba009dx 15-ba079dx 15-ba113cl 15-bs015dx 15-bs113dx 15-bs115dx 15-bw011dx 15-bw032wm Laptop Notebook PC Power Supply Cord : Electronics
![One of the wires inside the cable on my laptop charger broke, that's how I fixed it : r/techsupportmacgyver One of the wires inside the cable on my laptop charger broke, that's how I fixed it : r/techsupportmacgyver](https://i.redd.it/81ieef9s1pa11.jpg)
One of the wires inside the cable on my laptop charger broke, that's how I fixed it : r/techsupportmacgyver
![Amazon.com: HP 45W 19.5V 2.31A Laptop Charger for HP Stream 11 13 14, Pavilion, Elitebook Folio, Spectre, Pavilion Touchsmart, Spectre Ultrabook, AC Adapter Power Supply (4.5mm x 3mm) : Electronics Amazon.com: HP 45W 19.5V 2.31A Laptop Charger for HP Stream 11 13 14, Pavilion, Elitebook Folio, Spectre, Pavilion Touchsmart, Spectre Ultrabook, AC Adapter Power Supply (4.5mm x 3mm) : Electronics](https://m.media-amazon.com/images/I/61eR+9S+M2L._AC_UF1000,1000_QL80_.jpg)
Amazon.com: HP 45W 19.5V 2.31A Laptop Charger for HP Stream 11 13 14, Pavilion, Elitebook Folio, Spectre, Pavilion Touchsmart, Spectre Ultrabook, AC Adapter Power Supply (4.5mm x 3mm) : Electronics
![Amazon.com: 45W Replacement AC Adapter Charger for Dell Inspiron 15 3000 5000 Series 15-3552 3555 3558 3565 3567 5551 5552 5555 5558 5559 5565 5567 5568 5578 7558 7568 7569 7579 Laptop Power Supply Cord : Electronics Amazon.com: 45W Replacement AC Adapter Charger for Dell Inspiron 15 3000 5000 Series 15-3552 3555 3558 3565 3567 5551 5552 5555 5558 5559 5565 5567 5568 5578 7558 7568 7569 7579 Laptop Power Supply Cord : Electronics](https://m.media-amazon.com/images/I/61bvFCvQhPL.jpg)
Amazon.com: 45W Replacement AC Adapter Charger for Dell Inspiron 15 3000 5000 Series 15-3552 3555 3558 3565 3567 5551 5552 5555 5558 5559 5565 5567 5568 5578 7558 7568 7569 7579 Laptop Power Supply Cord : Electronics
![7.4x5.0 with pin inside DC Power Charger Plug Cable Connector for Dell Laptop adapter charger DC connector 7.4*5.0mm cable 7.4x5.0 with pin inside DC Power Charger Plug Cable Connector for Dell Laptop adapter charger DC connector 7.4*5.0mm cable](https://ae01.alicdn.com/kf/HTB1noMgPXXXXXXHXVXXq6xXFXXXL/7-4x5-0-with-pin-inside-DC-Power-Charger-Plug-Cable-Connector-for-Dell-Laptop-adapter.jpg)
7.4x5.0 with pin inside DC Power Charger Plug Cable Connector for Dell Laptop adapter charger DC connector 7.4*5.0mm cable
![45W 19.5V 2.31A AC Adapter Laptop Charger for Dell Inspiron 11 13 14 17 15 3000 5000 7000 Series Inspiron 3147 3168 - Walmart.com 45W 19.5V 2.31A AC Adapter Laptop Charger for Dell Inspiron 11 13 14 17 15 3000 5000 7000 Series Inspiron 3147 3168 - Walmart.com](https://i5.walmartimages.com/asr/78a11b7a-181e-41fe-a1f8-9fc168ebe4aa.2cbb28850e7529931d282662a9afe777.jpeg?odnHeight=768&odnWidth=768&odnBg=FFFFFF)
45W 19.5V 2.31A AC Adapter Laptop Charger for Dell Inspiron 11 13 14 17 15 3000 5000 7000 Series Inspiron 3147 3168 - Walmart.com
![Amazon.com: 45W 19.5V 2.31A Ac Adapter Laptop Charger for HP Pavilion x360 Charger 15-f272wm 15-f387wm 15-f233wm 15-f222wm 15-f211wm 15-f337wm 17-g121wm 17-g119dx Laptop Notebook Power Supply Cord Plug : Electronics Amazon.com: 45W 19.5V 2.31A Ac Adapter Laptop Charger for HP Pavilion x360 Charger 15-f272wm 15-f387wm 15-f233wm 15-f222wm 15-f211wm 15-f337wm 17-g121wm 17-g119dx Laptop Notebook Power Supply Cord Plug : Electronics](https://m.media-amazon.com/images/I/61O2DIdyZmL.jpg)
Amazon.com: 45W 19.5V 2.31A Ac Adapter Laptop Charger for HP Pavilion x360 Charger 15-f272wm 15-f387wm 15-f233wm 15-f222wm 15-f211wm 15-f337wm 17-g121wm 17-g119dx Laptop Notebook Power Supply Cord Plug : Electronics
![10pcs/lot 7.4x5.0 with pin inside DC Connector Plug Cable for Dell Laptop adapter charger DC connector 7.4*5.0mm DC cable 10pcs/lot 7.4x5.0 with pin inside DC Connector Plug Cable for Dell Laptop adapter charger DC connector 7.4*5.0mm DC cable](https://ae01.alicdn.com/kf/HTB189EmRpXXXXXOaXXXq6xXFXXXV.jpg?size=41884&height=810&width=812&hash=d9f595efd2d4206ad10bd97a73711371)