| 摘要 |
<p>A sensing panel electric power supply device, comprising a power adapter, a battery, and a switching control circuit; the power adapter input is connected to the mains; the battery output and the power adapter are connected, by means of the switching control circuit, to the electrical input of the sensing panel so as to alternately supply power to the sensing panel by means of the switching control circuit. Using the described structure, power is supplied to the sensing panel by means of the power adapter when there is mains power, and power is supplied to the sensing panel by means of the switching control circuit switching to use of the battery when there is a power outage, thus addressing the trouble caused by the sensing panel being unable to operate when there is a power outage; at the same time, the invention also resolves the inconvenience of the prior art of frequently having to disassemble a sensing panel using a dry cell battery so as to replace the dry cell battery.</p> |
