Filters and timers

Time constants, RC filters and 555 timers.

Last technical review

Included tools

RC time constantTime constants, RC filters and 555 timers.RC filter cutoff frequencyCalculate cutoff frequency, time constant and attenuation for a first-order RC filter.555 timerTime constants, RC filters and 555 timers.Capacitor codesTime constants, RC filters and 555 timers.

Component selection

Always check units, prefixes and order of magnitude. Do not use an ideal result without margin or a datasheet check. Compare the result with temperature, tolerances and real conditions.