Forum Discussion

TenOC's avatar
TenOC
Nomad
Aug 08, 2017

Laptop -- Charging Brick -- Surge protector ???

When my laptop is plugged into 110 volts and charging does the charging brick that changes the AC to DC provide protection against power surges and spikes? Should I still have a surge suppressor in...
ScottG's avatar
ScottG
Nomad
Aug 09, 2017
magicbus wrote:

A laptop already has this functionality built in as it has it's own internal battery.

Correct answer. The brick does not supply any protection however the laptop battery acting as a capacitor does absorb spikes and float through voltage drops, just like a UPS.

Dave


The power supply still has to endure those spikes so SP is still good.
BTW, a capacitor doesn't absorb spikes - it charges and then releases them.

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