2 results about "Time constant" patented technology

The invention discloses a device for measuring the electric capacity and the parallel resistance of a single capacitor. The device comprises a low-frequency high-voltage power supply, a low-frequencypincerlike mutual inductor, a high angular precision measurement module and a human-computer interaction and interface module; the low-frequency high-voltage power supply is connected to two ends of the single capacitor to be detected, and outputs a high-voltage exciting signal at the fixed frequency to the high angular precision measurement module; the low-frequency pincerlike mutual inductor isdirectly embedded on a porcelain bushing at one end of the single capacitor to be detected, and outputs the acquired current signal to the high angular precision measurement module while measuring; and the high angular precision measurement module processes and operates the signal acquired by the low-frequency pincerlike mutual inductor, displays the actually measured electric capacity and parallel resistance of the single capacitor to be detected through the human-computer interaction and interface module, and simultaneously, controls on and off of the low-frequency high-voltage power supplythrough a relay. According to the device in the invention, the charging time constant is reduced; and time consumption in a measurement process is reduced.