| 摘要 |
The utility mode discloses a power supply device and a programming key including it, 5 wherein the power supply device is used to supply the programming key with electric power, characterized in that the power supply device comprises at least a first power supply interface, a second power supply interface and a power management circuit which includes an output end for supplying power to the programming key, wherein the first and second power supply interfaces are electrically connected to the power 10 management circuit, and when the first and/or second power supply interface is connected to an external equipment, the power supply device is supplied with electric power from the extemal equipment via the first and/or second power supply interface and is converted as a source of power supply mating with requirement of the output end for supplying power to the programming key. 2 1 1 1 1 12 - 7---/ Fig. 1 +5V +12V D2 Cl C2 iC3 C Fig. 2 |
