In 1919, the 18th Amendment to the U.S. Constitution, which prohibited the sale and manufacture of alcohol, was ratified. It went into effect on January 16, 1920âbeginning the era known as Prohibition.
Because time constant calculations are important, and often needed, it is better to make the definition of the time constant (T) in a CR circuit: THE TIME TAKEN FOR THE VOLTAGE ACROSS A CAPACITOR TO INCREASE BY 63.2% OF THE DIFFERENCE BETWEEN ITS PRESENT AND FINAL VALUES.
With respect to circuit breakers, the I 2 t [A 2 s] is expressed for the current flow between the initiation of the fault cur-rent and the clearing of the circuit.21 - LONG-TIME DELAY: an intentional time delay in the overload tripping of an adjustable circuit breakerâs inverse time characteristics.