| 摘要 |
A protection apparatus (10) is provided that can use a thermal fuse (16) at higher voltage and higher current. The protection apparatus (10) includes a protection circuit (20) connected in series between a power supply (12) and a load (14). The protection circuit (20) includes a thermal fuse (16) with a predetermined operating temperature, activated in response to sensing overheating of the power supply (12) and/or load (16), and an electrosensitive fuse (18) connected in parallel with the thermal fuse (16), and activated at a predetermined operating current. The electrosensitive fuse (18) is adapted to be activated only after the thermal fuse (16) has been activated at the predetermined operating temperature. |
