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电路在正常工作时所产生的不希望有的振荡叫作寄生振荡。这种振荡往往是因为分布电容、电感的寄生反馈引发的。这种振荡的存在会破坏电路正常工作,甚至会使零件、晶体管、电子管过载而损坏。
The unwanted oscillation of the circuit during normal operation is called parasitic oscillation. This oscillation is often caused by parasitic feedback of distributed capacitance and inductance. The existence of such oscillations will destroy the normal operation of the circuit, and even damage the components, transistors and tubes.