time constant

Noun
  1. (electronics) the time required for the current or voltage in a circuit to rise or fall exponentially through approximately 63 per cent of its amplitude (synset 115294953)
    referred to in: electronics - the branch of physics that deals with the emission and effects of electrons and with the use of electronic devices
    is a type of: interval, time interval - a definite length of time marked off by two instants
    subtypes: relaxation time - the time constant of an exponential return of a system to equilibrium after a disturbance
  2. The ratio of the inductance of a circuit in henries to its resistance in ohms (synset 113848297)
    is a type of: ratio - the relative magnitudes of two quantities (usually expressed as a quotient)

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