A capacitor analyzer is designed to check:

A capacitor analyzer is designed to check:

• A. The voltage rating
• B. The capacitance
• C. The ESR
• D. The temperature coefficient

Answer: (B)

Capacitance is what a capacitor stores: the amount of electric charge per volt. A capacitor analyzer is built to determine that value and how it matches the part’s labeled capacitance and tolerance. It does this by applying a small signal and measuring how the capacitor responds, from which the capacitance is calculated. That direct measurement of the stored charge per volt is the primary purpose of the test instrument, making it the best choice. Voltage rating describes how much voltage the dielectric can withstand before breaking down, not how much charge the capacitor stores at a given voltage, so it isn’t the main parameter the analyzer is designed to check. ESR (equivalent series resistance) is important for how the capacitor behaves in a circuit, and some analyzers can measure it, but it’s a secondary parameter to the core function of verifying the capacitance. Temperature coefficient relates to how capacitance changes with temperature, which is useful in certain tests, but again the primary function of a capacitor analyzer is to confirm the capacitance value and its tolerance.

Capacitance is what a capacitor stores: the amount of electric charge per volt. A capacitor analyzer is built to determine that value and how it matches the part’s labeled capacitance and tolerance. It does this by applying a small signal and measuring how the capacitor responds, from which the capacitance is calculated. That direct measurement of the stored charge per volt is the primary purpose of the test instrument, making it the best choice.

Voltage rating describes how much voltage the dielectric can withstand before breaking down, not how much charge the capacitor stores at a given voltage, so it isn’t the main parameter the analyzer is designed to check. ESR (equivalent series resistance) is important for how the capacitor behaves in a circuit, and some analyzers can measure it, but it’s a secondary parameter to the core function of verifying the capacitance. Temperature coefficient relates to how capacitance changes with temperature, which is useful in certain tests, but again the primary function of a capacitor analyzer is to confirm the capacitance value and its tolerance.