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The function of fuse

A fuse is an electrical device that automatically blows when the circuit current is too high to protect equipment and prevent fires. Its functions include: preventing overload current and cutting off the circuit. Prevent short-circuit current and prevent high current from damaging equipment or causing fire. Limit fault current and protect equipment. Isolate faulty circuits to prevent fault spread.

Apr 25, 2024 pm 07:54 PM

How load cells work

The load cell uses the strain effect caused by the deformation of the elastic material to convert the weight into an electrical signal: when the elastic material deforms, the resistance value changes (strain effect); this change is detected by the Wheatstone bridge and converted into a voltage output; the output voltage is the same as the Proportional to the load-bearing capacity, after calibration, it has high accuracy, high sensitivity, fast response and durability.

Apr 25, 2024 pm 07:51 PM

What does the NAND gate mean?

A NAND gate is a logic gate that has two or more inputs and an output that is low if and only if all inputs are high. Its logic symbol is a triangle, with input at the bottom, output at the top, and a small circle in the middle to represent reversal. NAND gates are used to implement logic inversion, create other logic gates, and are used in combinational logic circuits, clock generators, and counters.

Apr 25, 2024 pm 07:48 PM

How to calculate double integral

The double integral represents the integral that calculates the sum of function values on a two-dimensional area. The calculation method is: decompose the integral: decompose the double integral into two one-fold integrals; find the first-fold integral: integrate the inner integral; find the outer integral: The obtained function of one variable is brought into the outer integral for integration.

Apr 25, 2024 pm 07:45 PM

what is mems sensor

MEMS sensor is a miniaturized mechanical-electronic system that integrates mechanical components and electronic components on a silicon-based chip. It converts mechanical deformation or displacement into electrical signals to measure various physical parameters. There are various types of MEMS sensors, including accelerometers, gyroscopes, pressure sensors, temperature sensors, and biosensors, which are widely used in consumer electronics, automotive, medical, industrial, and defense fields. With the development of technology, MEMS sensors are expected to achieve further breakthroughs in size, performance and application scenarios.

Apr 25, 2024 pm 07:42 PM

The role of twisted pair

The main functions of twisted pair cables include: Data transmission: Transmitting Internet connections, files, and communication signals. Voice calls: Provide clear and stable call quality. Networking devices: Connect network devices such as computers, routers, switches, and printers. Security monitoring: transmit video and audio signals to achieve remote monitoring. Building automation: Connect controllers, sensors and actuators to achieve centralized management of equipment. Other applications: medical equipment, industrial control and audio and video systems, etc.

Apr 25, 2024 pm 07:36 PM

What is a twisted pair?

Twisted pair is a type of cable consisting of insulated copper wires twisted together in opposite directions to form a pair and wrapped in an outer sheath. It is mainly used in Ethernet and telephone networks and includes types such as Unshielded Twisted Pair (UTP) and Shielded Twisted Pair (STP).

Apr 25, 2024 pm 07:33 PM

The difference between strong electricity and weak electricity

The main difference between strong electricity and weak electricity is the voltage range: strong electricity is higher than 36 volts, and weak electricity is lower than 36 volts. Strong electricity is mainly used for power and lighting, while weak electricity is used for information transmission and control. Strong electricity has greater safety hazards, while weak electricity is relatively safe. Strong electricity uses multi-stranded copper core wires, and weak electricity uses single-strand or twisted-pair wires. During construction and installation Strong and weak current systems are wired separately. The frequency of strong current is usually 50 or 60 Hz. The frequency of weak current is diverse. The transmission distance of strong current is shorter and the transmission distance of weak current is longer.

Apr 25, 2024 pm 05:24 PM

What are the three formulas of the mean value theorem?

The mean value theorem provides three equivalent formulas, describing the relationship between the average velocity between two points on the function graph and the instantaneous velocity of the function at a certain point: f(b) - f(a) = f'(c) * (b - a)f(c) = (f(a) + f(b)) / 2f'(c) = (f(b) - f(a)) / (b - a)

Apr 25, 2024 pm 05:21 PM

How to use an oscilloscope

An oscilloscope is used to measure the time domain waveform of electrical signals. Here's how to use it: Connect to the circuit and ground; set the vertical gain and horizontal time base; trigger and analyze the amplitude, frequency, phase, and shape of the waveform; take advantage of advanced features such as FFT analysis, signal generator, and logic analyzer.

Apr 25, 2024 pm 05:18 PM

Is the permanent magnet motor DC or AC?

Permanent magnet motors can operate as either AC or DC motors: AC motor: AC drives a rotating magnetic field in the armature windings, which interacts with the magnetic field of the permanent magnets to produce torque. DC motor: DC electricity produces a constant magnetic field, which interacts with the magnetic field of the permanent magnet to produce torque.

Apr 25, 2024 pm 05:06 PM

What types of lidar are there?

Lidar is divided into five types: mechanical, semi-solid-state, solid-state, flash and frequency modulated continuous wave (FMCW). The scanning methods and principles have their own advantages and disadvantages and are suitable for different application scenarios.

Apr 25, 2024 pm 05:03 PM

What is the principle of lidar?

LiDAR measures the distance between an object and a sensor by emitting and measuring the time difference between laser pulses. Its working principle includes: emitting laser pulse target reflection time measurement distance calculation

Apr 25, 2024 pm 04:57 PM

Does lidar emit radiation?

Yes, lidar emits electromagnetic radiation (laser), but its radiation in the near-infrared band has low energy and short pulses, making it harmless to the human body. At present, lidar has been widely used in fields such as autonomous driving, robotics, and surveying and mapping, and has been proven safe and harmless to the human body after safety testing and certification.

Apr 25, 2024 pm 04:54 PM