Multimeter Usage Mnemonics Check the range before measuring; do not measure without checking. Do not change the range while measuring; switch to the off position after measuring. The dial should be level, and the reading must be aligned correctly. The range must be appropriate, and the reading should be aligned correctly. Measure resistance (R) without … Read more
1. Common Electrical Symbols Drawing Methods 1. Several Basic Concepts: Contact: The dynamic contact point of the electrical device, also known as the contact head. Make: This describes the action of the contact point, closing (connecting) when energized, also known as normally open; a make contact is also called a normally open contact. Break: This … Read more
All multimeters are equipped with a dial on the front, which not only has several scales corresponding to various measurement items but also includes various symbols, scale lines, and values, as shown in the figure. Correctly reading and understanding these symbols is fundamental to effectively using a multimeter. Letter Symbols and Their Meanings on Multimeters … Read more