PrismKit計算機RC 時間常數計算機RC 時間常數計算機在瀏覽器中執行本機複製連結Markdown取得 RC 電路的時間常數、充電曲線與截止頻率，依目標截止頻率求出 R，或計算 LC 電路的諧振頻率。LED 電阻計算機Find the series resistor for one or more LEDs, rounded up to a standard E-series value, with its power rating and actual current.電阻計算機Decode a resistor's color bands into its resistance and tolerance, or the reverse — type a value to get the bands.