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Electronic oscillation is a repeating cycl … Electronic oscillation is a repeating cyclical variation in voltage or current in an electrical circuit, resulting in a periodic waveform. The frequency of the oscillation in hertz is the number of times the cycle repeats per second. The recurrence may be in the form of a varying voltage or a varying current. The waveform may be sinusoidal or some other shape when its magnitude is plotted against time. Electronic oscillation may be intentionally caused, as in devices designed as oscillators, or it may be the result of unintentional positive feedback from the output of an electronic device to its input. The latter appears often in feedback amplifiers (such as operational amplifiers) that do not have sufficient gain or phase margins. In this case, the oscillation often interferes with or compromises the amplifier's intended function, and is known as parasitic oscillation.on, and is known as parasitic oscillation.
, 電子振盪是在电路中出現的電壓或电流周期性反覆變化，造成周期性的波形。電子振盪的頻率單位是赫兹，是每秒的週期數。 電子振盪可能會以電流變化的形式出現，也可能會以電壓變化的形式出現。依將波形相對時間繪圖，可能是正弦曲線或是其他形狀的曲線。電子振盪可能是刻意產生（如电子振荡器），也可能是因為將設備輸出不小心接回輸入，意外產生的正回饋。後者也可能是回授放大器（例如运算放大器）的相位裕度或是增益裕度不足所造成。後者的振盪會干擾放大器原有的功能，或是使其效果變差。電子振盪也可能因為寄生元件所造成的，稱為雜散振盪。
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| rdfs:comment |
Electronic oscillation is a repeating cyclical variation in voltage or current in an electrical circuit, resulting in a periodic waveform. The frequency of the oscillation in hertz is the number of times the cycle repeats per second.
, 電子振盪是在电路中出現的電壓或电流周期性反覆變化，造成周期性的波形。電子振盪的頻率單位是赫兹，是每秒的週期數。 電子振盪可能會以電流變化的形式出現，也可能會以電壓變化的形式出現。依將波形相對時間繪圖，可能是正弦曲線或是其他形狀的曲線。電子振盪可能是刻意產生（如电子振荡器），也可能是因為將設備輸出不小心接回輸入，意外產生的正回饋。後者也可能是回授放大器（例如运算放大器）的相位裕度或是增益裕度不足所造成。後者的振盪會干擾放大器原有的功能，或是使其效果變差。電子振盪也可能因為寄生元件所造成的，稱為雜散振盪。
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| rdfs:label |
Electronic oscillation
, 電子振盪
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