The series resonance under UHV power can help many power workers conduct various power tests more conveniently.

1、 The applications of series circuit resonance include:

1. Series resonance can be used to select the desired signal from numerous frequency signals. By utilizing the characteristic that the voltage of the inductor (or capacitor) during resonance is higher than the applied signal voltage, a voltage Q times higher than the original signal can be obtained and amplified. This not only screens useful signals but also suppresses interference from other frequency signals.

2. Series resonance can also absorb interference signals at the resonance frequency. By utilizing the principle of minimizing impedance during resonance, LC series branches are connected in parallel in the circuit, allowing the signal at the resonance frequency to be bypassed to the maximum extent, while other frequency signals can be unobstructed, forming a band stop filter.

3. By connecting the LC series branches in series in the circuit and utilizing the principle of minimizing the resonant frequency LC impedance, the resonant frequency signal can be unobstructed, while other frequency signals are blocked to varying degrees, forming a bandpass filter.

2、 Application of Parallel Circuit Resonance

1. Parallel resonance can utilize the principle of maximum impedance during parallel resonance in the input signal circuit, allowing the resonant frequency signal to pass through instead of the non resonant signal being greatly absorbed and attenuated, forming a bandpass filter.

2. Parallel resonance can also be connected in series in the input signal circuit, utilizing the principle of maximum impedance during parallel resonance to block the resonant frequency signal and allow other signals to pass smoothly, forming a band stop filter.