The LC circuit mainly consists of capacitors and inductors, which oscillate freely through the mutual conversion of electric field energy and magnetic field energy. To maintain oscillation, an amplification circuit with positive feedback is required. LC oscillators are divided into transformer coupled and three-point oscillators. Many quartz crystal oscillators are used, and LC oscillators composed of integrated operational amplifiers are also used. Due to the fact that the parameters of the device cannot be exactly the same, the states of the two transistors change at the moment of power on. This change, due to the increasingly strong positive feedback effect, leads to reaching a temporary steady state.