Rush current prevention circuit.

摘要

A second circuit (4) to which back-up power is supplied, such as a RAM, is connected downstream of a first circuit (3) to which no back-up power is supplied, such as a CPU. A gate circuit fixs the output signal of the first circuit at a predetermined level when the output signal of the first circuit is at an indefinite level and prevents a penetration current from flowing through the second circuit (6).