How to detect voltage

How to Check Voltage: Hot Topics and Practical Guides from Around the Web

Recently, the discussion on voltage detection has increased significantly across the Internet, especially in the fields of household electricity safety and new energy equipment maintenance. This article will combine hot topics in the past 10 days to provide you with a structured voltage detection guide, covering tool selection, operating steps and precautions.

1. Recently popular topics related to voltage detection

2. Core method of voltage detection

1. Multimeter detection method (most commonly used)

step:

① Adjust the multimeter knob to the voltage range (V~ or V-)

② Connect the red test lead to the positive pole and the black test lead to the negative pole.

③ Read the display value

2. Electrical test pen detection method (simple version)

Suitable for 220V AC rapid detection:

① Press the metal piece at the end of the pen with your finger

② The pen tip contacts the measured point

③ Observe whether the neon tube emits light

3. Latest technology trends

According to recent e-commerce platform data, sales of intelligent detection equipment increased by 120% year-on-year. The main innovative functions include:

• Bluetooth data transmission (real-time display on mobile APP)

• Automatic range switching

• Security alarm system

4. Safety precautions

5. Expert advice

1. Home users are recommended to equip a multimeter with CAT III safety certification.

2. High voltage detection (above 380V) must be performed by professionals

3. Calibrate testing equipment regularly (recommended once a year)

Through the above structured content, you can not only grasp the latest voltage detection technology trends, but also obtain practical operation guides. The issue of voltage detection of new energy vehicles has been a hot topic recently. It is recommended to pay special attention to battery pack balance detection, which is a key factor affecting battery life.