To provide a circuit for an auxiliary composing a vehicular power supply device that improves the safety and reliability of a vehicle and suppresses an increase in manufacturing costs.
A circuit for an auxiliary includes a fuse F0, a cable C2 connecting one end of the fuse F0 to a DC/DC converter 11, and a cable C1 connecting the other end of the fuse F0 to an auxiliary battery 12 which stores electric power supplied from the DC/DC converter 11. When the fuse F0 is not cut by fusing, power is supplied from the DC/DC converter 11 through the cable C2 to a second load 15, which is driven by the supplied power. When the fuse F0 is cut by fusing, power is supplied from the auxiliary battery 12 through the cable C1 to the second load 15, which is driven by the supplied power and consumes less power, compared to a case where the fuse F0 is not cut by fusing.
ANRAKU FUMIO
MAKI HIDETAKA
NISHIOKA FUTOSHI
SHIINA MIKIO
KOJIMA MINORU
Yoshifumi Saeki
Mitsuo Teramoto
Suzuki Mitsuyoshi
Shingo Suzuki