Application of MAX232 in intelligent networked UPS

Intelligent Network UPS system Network UPS intelligent system mainly takes the whole network as the management object, which means adding RS232 and R485 interfaces at the output end of UPS host, SNMP (Simple Network Management Protocol) cartoon signal interface. These interfaces are connected with the corresponding communication interfaces on servers, routers, gateways and other equipment […]

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Circuit and working principle analysis of single chip microcomputer and computer interface (TTL and RS232 level analog conversion)

RS232 interface overview RS232 interface, also known as DB9 interface, is one of the mainstream serial communication interfaces. Due to the early emergence of RS232 interface standard, there are inevitable deficiencies, mainly including the following four points: 1) The signal level value of the interface is high, which is easy to damage the chip of […]

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Ultrasonic emission circuit diagram

The ultrasonic emission circuit diagram is shown in the figure below. The applied voltage of ultrasonic transducer is an important factor to determine the detection distance. The applied voltage can affect the electric field strength of piezoelectric ceramic materials in the transducer, and then affect the diaphragm shape variable and piezoelectric conversion efficiency. At present, […]

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Introduction of RFID module and LCD module of intelligent garage control system

RFID technology is widely used in the market. In foreign countries, RFID has been widely used in industrial automation, commercial automation, transportation, logistics and many other fields. Its unique high accuracy and rapidity greatly reduces the logistics cost of enterprises, and improves the market competitiveness and service efficiency of enterprises. This paper designs a complete […]

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How to solve the burning problem of MAX232 and MAX3232

Have you ever experienced a MAX232 or MAX3232 heating or burning? Many engineers in the process of single-chip microcomputer program development, unknown reason in the use of RS232 chip found burned, spent a lot of effort also do not understand the reason. To solve this problem, just follow these guidelines. Follow manufacturer’s data book Machine […]

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