With Instructables you can share what you make with the world, and tap into an ever-growing community of creative experts.
Tell us about yourself!
No. Almost all power adapters have thrid pin other than vcc and ground. It looks like a small pin at the center of dc jack. Every manufacturer have their own unique signal. This is why you can't charge DELL laptop with HP power adapter. After reading forums, I think that certain manufactures used constant dc volt (using resistor). It may have changed now to ICs. Without this pin laptop refuses to charge battery.
Make a High-Altitude Balloon Tracker (Arduino)
Line Following Robot
Let your inbox help you discover our best projects, classes, and contests. Instructables will help you learn how to make anything!
© 2016 Autodesk, Inc.