The complete test system consists of a frequency modulation main unit, a reactor, a voltage divider, an excitation transformer, a connecting wire, an isolating transformer (optional device) and a compensating capacitor (optional device). After the test object is connected, a resonant system is formed for communication. Pressure test. Host: It is a sine wave AC power supply with adjustable amplitude and frequency. It provides excitation source for the resonant circuit and provides functions such as voltage display, current display, timing, protection and alarm. Reactor: It is a large inductor coil, which is connected with the test object (equivalent to capacitor) to form a series resonant circuit. The reactor can be equipped with multi-section reactors. When used, different series and parallel combinations can be used to achieve different inductances. Different test conditions. Voltage divider: The internal voltage is divided by the capacitor, and the low voltage is obtained from the high voltage of the sample for the host to measure and control. Excitation transformer: isolates the host power supply from the resonant tank power supply and raises the output voltage of the host. Compensation capacitor: When the capacitance of the sample is very small, if the power frequency that may be required to achieve system resonance exceeds the test standard, a compensation capacitor can be connected in parallel with the sample to achieve the test requirement. The capacitor is called a compensation capacitor.
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