what is a switchgear
**Switchgear** is a combination of switching devices used for controlling, protecting, and isolating electrical equipment in the power system. It is usually composed...
Use a multimeter to measure the condition of a heating tube
YouTube：https://youtube.com/shorts/LHSaHDNbrMgMultimeters are divided into analog multimeters and digital multimeters. The following are the methods for using these two t...
