So as you might see, Dells have propriety charging plugs. Instead of an outer ring (negative) and an inner hole (positive), the Dell connector has an outer ring (negative), Inner ring (positive) and a really really thin center pin (???).
I need to know what the center pin does. The original power supply on the dell conked out. I grafted an old 19V laptop PSU to the connector, leaving the center pin unconnected. The laptop boots but won't charge. Maybe it's 5 volts which I can give by putting a 7805 inline? Or (hope not) some propriety handshaking.
I need to know what the center pin does. The original power supply on the dell conked out. I grafted an old 19V laptop PSU to the connector, leaving the center pin unconnected. The laptop boots but won't charge. Maybe it's 5 volts which I can give by putting a 7805 inline? Or (hope not) some propriety handshaking.
