How to check electrician certificate online in Dongguan 2016 Chashan, electrician training institution

Connected in the receiver circuit, the voltage drop across will be received by the receiver. The value of impedance is related to the frequency of the induced voltage. At low frequencies, it is basically equal to the resistance of the connecting wire and the capacitive reactance of the power filter output capacitor; at high frequencies, it is basically equal to the inductive reactance of the connecting wire and the capacitive reactance of the power filter output capacitor. In order to prevent the coupling of interference voltage caused by the output impedance of the power supply, the output impedance of the power supply should generally be reduced or a decoupling circuit should be used in the circuit.
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Person: Teacher Li
Consultation phone:
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School name
: Dongguan Guangyou Vocational Training School
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Address: Third Floor, Dongguan Bus Terminal East Station (Guangyou Education)
Guangyou Vocational School is open all year round
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Guangyou Education
Training goals
: Starting from scratch, guide students in all aspects, how to connect indoor and outdoor wires, emergency first aid and treatment of electric shock, Electrician field operation and theory, safe operation, on-the-job operation and employment experience practice
Specific electrician training course introduction:
Introduction to junior electrician training course:
Safe operation of electricians
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Basic knowledge of electrical circuits
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Calculation of circuits
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Serial, parallel and application of resistors
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Alternating current and direct current
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Single-phase alternating current, three-phase alternating current
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Transformers, mutual inductors
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Single-phase electricity meters, three-phase electricity meters
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Motor
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The use of electrical instruments
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Multimeter
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Megohmmeter
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Current clamp type Meter
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Ammeter
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Voltmeter
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Applications of low-voltage electrical appliances
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Fuse
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Knife switch
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Circuit breaker
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Contactor
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Thermal relay
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Intermediate relay
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Time relay
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Button
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Practical operation of lighting circuit
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Practical operation of industrial power circuit
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Motor forward rotation control
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Motor interlocking forward and reverse rotation control circuit
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Double interlocking forward and reverse rotation control circuit
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Double interlocking forward and reverse rotation control circuit
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Workbench automatic reciprocating control circuit
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Motor sequential start control circuit
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Motor voltage reduction start control circuit
Intermediate electrician training course Training content: electrical control technology, electrician and electronic basics, maintenance electrician technology, internal and external line electrician technology, electrical equipment operation, transformer and motor operation and maintenance programmable controller principles and Application,
electrical
electrical measurement knowledge, practical operation, etc., advanced training content: digital circuit technology, factory power transformation and distribution technology,
factory electrical control technology,
programmable control Principles and applications of inverters,
Principles and practical technologies of microcontrollers,
Rectification and inverter technology,
Principles and application technologies of frequency converters, practical operations, etc.
Will follow the instantaneous charge of each part of the conductor changes with changes. This becomes an electromagnetic wave propagating in space. A conductor in the electromagnetic wave will induce an electromotive force of the corresponding frequency due to the action of the electromagnetic wave. Electromagnetic field interference is a kind of irregular interference, which is easily coupled into the system through the power supply. In addition, long signal input lines, output lines and control lines also have antenna effects, that is, they can radiate and receive interference waves.