voltage tester - Definition & Meaning

a handheld tool used to determine the presence or absence of electrical voltage in a circuit or electrical outleta handheld tool used to determine the presence or absence of electrical voltage in a circuit or electrical outlet

A voltage tester is a tool used to check if electrical circuits or components are live or carrying electrical current. It typically consists of two probes that are connected to a display or indicator, showing whether voltage is present. Voltage testers come in various types, including non-contact models, which detect voltage without touching the wires, and contact models, which require the probes to be placed on the circuit. These tools are commonly used in electrical work to ensure safety before working on wiring or electrical systems, helping to prevent accidents and electrical shock.A voltage tester is a tool used to check if electrical circuits or components are live or carrying electrical current. It typically consists of two probes that are connected to a display or indicator, showing whether voltage is present. Voltage testers come in various types, including non-contact models, which detect voltage without touching the wires, and contact models, which require the probes to be placed on the circuit. These tools are commonly used in electrical work to ensure safety before working on wiring or electrical systems, helping to prevent accidents and electrical shock.

例句

Before starting any electrical repairs, it is important to use a voltage tester to ensure the circuit is not live.
在开始任何电气维修之前，重要的是使用电压测试仪来确保电路没有通电。
He used the voltage tester to check if the outlet was providing power before plugging in the appliance.
他在插入电器之前使用了电压测试仪来检查插座是否供电。
The technician grabbed his voltage tester to make sure the power was turned off before replacing the fuse.
技术人员拿起他的电压测试仪，以确保在更换保险丝之前电源已关闭。