PrismKit計算機LED 電阻計算機LED 電阻計算機在瀏覽器中執行本機複製連結Markdown為一顆或多顆 LED 計算串聯電阻，向上取到標準 E 系列阻值，並列出功率額定與實際電流。分壓計算機Work out a divider's output voltage, current and resistor power, or find R1 for a target voltage with the nearest E12, E24 and E96 values.RC 時間常數計算機Get an RC circuit's time constant, charge curve and cutoff frequency, find R for a target cutoff, or an LC circuit's resonant frequency.