Re: Laptop Power Supply
One 65W PSU can supply your new laptop with no problem. The only thing you should pay attention is it takes the longer time to fully charge your battery, or you need to switch off the laptop to charge the battery fully.
In case you want to connect the two (2) 65W AC adapters in parallel to supply the new laptop, you should modify the circuit as following:
- Connect 2 minus (-) output wires of 2 PSUs together and to the minus (-) power input terminal of the laptop.
- You need 2 rectifiers of about 5...10A each, high speed or Schottky type is preferrable. Connect each positive (+) output wires of 2 PSUs to the anodes of 2 rectifiers. Then connect together 2 cathodes of the 2 rectifiers and now to the positive (+) power input terminal of the laptop. These 2 rectifiers are used to protect each PSU from drawing current from other PSU that may lead PSUs to be damaged.
Warning: - You should check with your local electronics components vendors about the available rectifiers.
- You should, after connect 2 PSUs together via rectifiers, check carefully new power system with any dummy load, for example, several lamps of 24V-50W, and with a multimeter. Be sure it is good before using with your new laptop.
However, I suggest you not get risk with your laptop, which is very important for your job/work, especially the inside informations/documents. The AC adapter for laptop is not expensive, while the laptop+document are really worth, buy a new one, if you need 2 AC adapters at home and work.
Goodluck
nguyennam