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- What is the phenomenon of electromagnetic induction?
- The phenomenon of electromagnetic induction refers to the generation of electromotive force and induced current nearby when the magnetic field changes. The principle is Faraday's law of electromagnetic induction, that is, when the magnetic flux changes, an induced electromotive force will be generated in the conductor. This phenomenon is divided into two categories: kinetic electromotive force (generated by the movement of a conductor in a magnetic field) and transformer electromotive force (generated by magnetic flux passing through a conductor). The phenomenon of electromagnetic induction is widely used in the field of electrical engineering.
- Common Problem 564 2024-04-27 14:24:34
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- How to use a multimeter
- How to use a multimeter: Select the range: Select the appropriate range based on the measured value. Connect the test wires: the red wire is connected to "VΩmA" and the black wire is connected to "COM". Zero adjustment: Adjust the multimeter to the resistance level, short-circuit the two wires and then adjust the zero. Measure voltage: select the voltage range, connect the test lead, and read the pointer or digital display. Measure current: Select the current level, connect it in series in the circuit, and read the pointer or digital display. Measure resistance: select the resistance level, connect the test lead, and read the pointer or digital display.
- Common Problem 491 2024-04-27 14:18:23
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- What will happen if the crystal oscillator is broken?
- Common phenomena of crystal oscillator damage are: the clock signal is unstable or lost. The device cannot start. Abnormal frequency. Increased noise. Abnormal power consumption.
- Common Problem 788 2024-04-27 10:00:33
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- What is the unit of inductance?
- The unit of inductance is the henry (H), which is used to describe the resistance of an inductor to changes in current. 1 henry is equal to 1 volt-second/ampere and is widely used to calculate the inductance value of an inductor coil and the electromagnetic energy in a circuit.
- Common Problem 831 2024-04-27 07:09:12
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- What are the specifications and models of transformers?
- The specifications and models of the transformer are represented by the following parameters: rated capacity primary side rated voltage secondary side rated voltage winding connection group insulation level cooling method phase number transformation ratio
- Common Problem 680 2024-04-27 07:06:14
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- What is photovoltaic
- Photovoltaics is a technology that converts light energy into electrical energy, generating free electrons and forming an electric current through the photovoltaic effect. Photovoltaic systems include solar panels, inverters and controllers and are widely used in photovoltaic power generation, power supply systems, electronic equipment power supply and space exploration. Its advantages include cleanliness, non-pollution, strong renewable nature, distributed power generation and low maintenance costs.
- Common Problem 792 2024-04-27 06:57:16
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- What are the ssh remote connection tools?
- The most popular SSH remote connection tools include: PuTTY (free, open source, command line and GUI) MobaXterm (commercial, integrated terminal emulator) SecureCRT (commercial, powerful, command line and GUI) KiTTY (free, open source, command line ) Royal TSX (commercial, comprehensive remote connection management)
- Common Problem 434 2024-04-27 04:54:15
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- What is the ssh port number?
- The default port number for SSH is 22 because it was originally an unused port and later became common practice and security considerations. Modifying the SSH port number can help enhance security and prevent automatic scanning and attacks. Additionally, taking additional security measures, such as enabling firewalls and key authentication, is critical to protecting your SSH service.
- Common Problem 609 2024-04-27 04:51:14
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- There are several standards for the 3.5mm headphone jack
- There are two main standards for 3.5mm headphone jacks: TRS three-pole plug (stereo) and TRRS four-pole plug (stereo + microphone). A TRS plug has three contacts (tip, ring, sleeve), while a TRRS plug has four contacts (tip, first ring, second ring, sleeve). Both plugs are widely used in devices such as smartphones, tablets, headphones, and microphones.
- Common Problem 1321 2024-04-27 04:48:14
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- How many types of 3.5mm headphone jacks are there?
- Common 3.5mm headphone jack types found in consumer electronics include: TRS, TRRS, TRRRS, balanced, and stereo mini-plug. TRS is used for stereo audio, TRRS is used for microphone or headphone control, TRRRS is used for multiple control functions, balanced is used for professional audio, and stereo mini plug is used for two-channel equipment.
- Common Problem 1195 2024-04-27 04:45:21
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- Can the 3.5mm headphone jack be plugged into a computer?
- Yes, the 3.5mm headphone jack can be plugged into a computer. Through a 3.5mm audio cable, plug the headphones or other audio devices into the 3.5mm headphone jack of the computer to connect.
- Common Problem 975 2024-04-27 04:42:14
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- The difference between optical splitter and fiber optic switch
- Optical splitters split optical signals into smaller signals, while fiber optic switches connect multiple fiber optic devices and convert light signals. Optical splitters usually have multiple output ports, while fiber optic switches have multiple input and output ports. Optical splitters work based on the principle of optical interference, while fiber optic switches forward signals through electronic switching. Optical splitters are used for optical communications and wavelength division multiplexing, while fiber optic switches are used to build fiber optic networks.
- Common Problem 596 2024-04-27 03:24:14
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- What is the unit of resistivity?
- The unit of resistivity is ohm·meter (Ω·m), which represents the resistance per unit length, cross-sectional area. Resistivity is determined by resistance, cross-sectional area, and length, and different materials have different resistivities. Resistivity affects the resistance of wires, the conductivity of circuit boards, and the efficiency of heating elements.
- Common Problem 677 2024-04-27 03:21:13
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- What does the emc test project include?
- EMC testing projects mainly evaluate the EMI radiation and immunity of equipment, including: Radiated emission testing: measuring the intensity of the electromagnetic field emitted by the equipment. Immunity test: Simulate various electrical transients and electromagnetic interference to test the immunity of equipment, such as EFT/Burst, ESD, RFI and CW radiation, etc.
- Common Problem 1042 2024-04-26 15:09:14
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- What is the difference between EMI and EMC?
- EMI and EMC are related concepts, but there are key differences. EMI refers to the generation of electromagnetic interference, while EMC refers to electromagnetic compatibility, which is the ability to resist interference. EMI originates from electromagnetic equipment, while EMC involves equipment that is both immune to interference and does not interfere with other equipment. Methods to mitigate EMI include shielding and filtering, while methods to improve EMC include grounding and anti-interference circuit design.
- Common Problem 904 2024-04-26 15:06:14
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