1. A sudden, brief increase in electrical voltage that exceeds the normal operating level of a circuit or device
The lightning strike caused a voltage spike that damaged all the electronics in the house.
O raio causou um pico de tensão que danificou todos os eletrônicos da casa.
2. An electrical transient that can potentially harm sensitive equipment if not properly protected
A surge protector prevents voltage spikes from reaching your computer.
Um protetor de surto previne picos de tensão de atingirem seu computador.