Laptop Charger Voltage And Current

Laptop computers and most desktop computers use circuits to convert that 19v at up to around 2a to other lower voltages but usually at higher cu.

Laptop charger voltage and current. Your laptop charger only takes in up to 1 5 amps but it can supply up to 3 41 amps to the laptop at a reduced voltage. In the same way battery voltage is regulated down to 3 3v 5v and probably also 12v for computer internals processor memory motherboard display and so on. On the back of acer aspire e15 laptop wrote input voltage is 19v and current is 3 42a. You can usually find the voltage your device needs on the device itself on the battery or if all else fails on the manufacturer s web site.

Note that the voltage required by the laptop remains the same during use but the amount of current drawn by the laptop will change as you use it. On the back of acer aspire e15 laptop wrote input voltage is 19v and current is 3 42a. I was pleasantly surprised to get a warning on the screen warning me that the power supply had a lower current rating than the proper one and that the computer may not charge well while running. Your laptop charger circuit regulates whatever is coming from ac adapter to more appropriate voltage for charging battery.

The other responders answers are very good so i d like to add a bit more by way of explanation. Its a dc current which charges the any equipment which functions on a energy storage device such as battery. One day i happened to be working on a large laptop it comes with a much higher current charger and plugged it in to the one on my desk. It doesn t sound like a automatic voltage sensing charger with the button to select voltage from 12 24v.

How to test a laptop charger with a multimeter laptop not turning on laptop adapter charger 23 02 2018. As a battery is a storage device and as we know that ac power can t be stored so chargers are provided with the special type of circuit. There is an updated video for this tutorial click link above and here.