The LM317 is a common adjustable integrated regulator with a maximum output current of 2.2A and an output voltage range of 1.25 to 37V. The connection is as follows:
1.25V voltage reference between 1, 2 feet. To ensure the output performance of the regulator, R1 should be less than 240 ohms. The regulated voltage value can be adjusted by changing the value of R2. D1, D2 are used to protect the LM317.
Uo=(1+R2/R1)*1.25
An electronic clock device with a wireless network monitoring camera is characterized in that it comprises an electronic clock device body with a wireless network monitoring camera; the electronic clock device body with a wireless network monitoring camera is composed of a foot, a wireless transmission module, a It consists of a rechargeable battery, a speaker, a touch display screen, a camera, a casing, an infrared device, and a microprocessor; the feet are fixedly installed at the bottom of the rechargeable battery; a casing is fixedly installed on the top of the rechargeable battery, and the The interior is provided with a touch screen, a camera, an infrared device and a microprocessor; the microprocessor is electrically connected to the rechargeable battery through wires; the wireless transmission module, speaker, display, camera and infrared device are connected to the micro processor through wires The display screen is arranged at the bottom of the camera, and the camera is surrounded by an infrared device; the wireless transmission module is fixedly installed on both sides of the rechargeable battery, and the speakers are opened on both sides of the casing
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