How long does it take to apply for the electrician IC certificate in Hengli, Dongguan in 2016? Are there any good training institutions?

digital multimeter uses a digital millivolt meter as its basic measurement and display component, which is a voltage-type measurement; while a traditional multimeter uses a microammeter as its basic measurement and display component, which is a current-type measurement. Therefore, a digital multimeter has higher input impedance and sensitivity than a traditional multimeter. , has less impact on the circuit under test and has higher measurement accuracy. When measuring DC voltage, through the conversion of the measurement selector switch, the circuit forms a DC voltmeter, and the resistors R, R, and R form a voltage divider. The measured voltage is added between the terminals B and B of the voltage divider. The terminal is positive and the terminal B is positive. is negative. The digital meter (voltmeter) only measures the voltage on the sampling resistor. The sampling resistor can be part of the voltage divider or

Contact person: Teacher Li
Consultation Phone:
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School name
: Dongguan Guangyou Vocational Training School
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Address: Dongguan City Passenger Transport Third floor of Zhandong Station (Guangyou Education)
Guangyou Vocational School is open all year round
,
Learning electricians and providing electrician exam practice software
Guangyou Education
Training goals
: Starting from zero basics, we will guide students in an all-round way, how to connect indoor and outdoor wires, emergency first aid and treatment of electric shock, electrician field operation and theoretical use, safe operation, on-the-job operation and employment experience practice
Specific electrician Introduction to training courses:
Introduction to junior electrician training courses:
Safe operation of electricians
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Basic knowledge of electrical circuits
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Calculation of circuits
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Series, parallel connection and application of resistors
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Alternating current, 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 meters, three-phase meters
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Motors
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Use of electrical instruments
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Multimeter
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Megohmmeter
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Current clamp meter
.
Ammeter
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Voltmeter< br/> .
Applications of low-voltage electrical appliances
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Fuses
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Knife switches
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Circuit breakers
.
Contactor
.
Thermal relay
.
Intermediate relay
.
Time relay
.
Button
.
Lighting circuit practical operation
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Industrial power circuit practical operation
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Motor forward rotation control
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Motor Interlocking forward and reverse control circuit
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Double interlocked forward and reverse control circuit
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Workbench automatic reciprocating control circuit
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Motor Sequential starting control circuit
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Motor voltage starting 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, Principle and application of programmable controller,
Electrical
Electrical measurement knowledge, practical operation, etc. Advanced training content: Digital circuit technology, factory power transformation and distribution technology,
Factory electrical control technology,
Principle and application of programmable controller,
Principle and practical technology of single chip microcomputer,
Rectifier and inverter< br/>Variable technology, frequency converter principle and application technology, practical operation, etc.
The digital multimeter is an active instrument and must be connected to a power source to work. Therefore, when using the digital multimeter, the battery should be installed first. Most digital multimeters use laminated batteries. Taking the <>-B digital multimeter as an example, open the back cover of the digital multimeter, insert a laminated battery, and then close the back cover. Then insert the test leads into the jack of the digital multimeter. It is generally customary to insert the red test lead into the &;
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, &;<> or &; jack as the positive test lead according to the measurement needs, and insert the black test lead into the &; jack as the negative test lead. Press the power switch on the control panel