Why do laptop chargers have a Transformer?

Your laptop is designed to run and charge at a certain voltage in DC power supply. House hold power is at a different(higher) voltage than what your laptop uses in AC power supply. The “Transformer” converts the AC power to DC at the required voltage (there is a rectification circuit incorporated also).

How does a laptop Transformer work?

The “Transformer” converts the AC power to DC at the required voltage (there is a rectification circuit incorporated also). Your laptop is designed to run and charge at a certain voltage in DC power supply. House hold power is at a different(higher) voltage than what your laptop uses in AC power supply.

Can you charge a laptop without a Transformer?

Yes, and the easiest way to do it is with a universal adapter. Remember to always check the voltage, no matter the charging solution. If that doesn’t suit you, charge your laptop from a car battery or use an external battery charger.

Why do Chargers need transformers?

We use transformers to change the size of a voltage. We can step the voltage down from a high voltage to a smaller one, for example in a mobile phone charger, or we can step it up, for example at a power station, to produce the very high voltages needed to transmit electricity through the National Grid power lines.

What is a transformer plug?

A transformer converts alternating current line voltage to a higher value or a lower value. Small transformers plug into a wall outlet and create low direct current voltages which are used by common electronic devices. …

Why do we need step down transformers?

The higher the current, the more heat is lost. To reduce these losses, the National Grid transmits electricity at a low current. This needs a high voltage. These high voltages are too dangerous to use in the home, so step-down transformers are used locally to reduce the voltage to safe levels.

What is the function of transformer?

For example, a small single phase transformer having a nameplate voltage of 480 volts primary and 240 volts secondary, would actually have a no load voltage of approximately 250 volts, and a full load voltage of 240 volts.