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RC time constant
RC Time Constant Calculator (τ = R × C)
Calculate an RC circuit’s time constant, 63% and 99% charge times and cutoff frequency.
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Capacitor code
104 = 100 nF
Series / parallel C
Capacitor networks
Inductor code
101 = 100 µH
Color code
3–6 bands, both ways
SMD code
472 · 1002 · 01C
Ohm's law
Voltage, current, power
