Noun. (plural security blankets). 1  A blanket that one uses to have a secure feeling or reduced anxiety, usually in the early years of life: Linus van Pelt had a famous security blanket. 2  Any object one uses to have a sense of security or reduced anxiety.
The time required for the current flowing in the LR series circuit to reach its maximum steady state value is equivalent to about 5 time constants or 5Ï. This time constant Ï, is measured by Ï = L/R, in seconds, were R is the value of the resistor in ohms and L is the value of the inductor in Henries.
Fig 4.3.1 The CR Time Constant Fig 4.3.1 The CR Time Constant When a voltage is applied to a capacitor it take some amount of time for the voltage to increase in a curve that follows a mathematically exponential law to its maximum value, after which, the voltage will remain at this steady state value until there is some other external change to cause a change in voltage.