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.
Letâs say that a circuit has a 10 Ï resistor and a 100 Farad capacitor in a circuit with 12 volts. The time constant = resistance * capacitance Time constant = 10 * 12 = 120 seconds = 2 minutes This means that the capacitor will be about â full in 2 minutes. If we change the resistor to a 60 Ï resistor, the time constant = 60 * 12 = 720 seconds = 12 minutes.