Wednesday, July 3, 2013

Laptop charger modification

This DC ammeter was taking up space on a shelf, just looking cool. Hooking it up to my laptop charger showed a decent amount of movement so I decided to combine the two devices. Read on for more details about how I shoved my laptop charger into this old school ammeter. 

Removing the screws on the face was all it took to get the ammeter open. The way the terminals are wired to the meter are quite interesting. For this project I will be using the 10  amp terminal which uses most of the wiring you see here.

The charger looked like it was going to fit but I didn't actually measure it.

This is the completed project in action. The battery in the laptop was charging and the screen was active, pulling just over 5A DC. 

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