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

The electricity then gradually develops to generate a glow discharge between the two main electrodes, and then the auxiliary electrode stops working. In the early stage of electron emission from the main electrode, electrons are only generated in the inert gas and collide with atoms for ionization to emit white light. Since the pressure of mercury vapor is very low at normal temperature, the mercury in the tube continues to vaporize due to the heating effect of discharge, and the pressure of mercury vapor continues to increase, gradually causing the collision ionization process of electrons and atoms to occur between mercury vapor, making it a major factor in discharge. The light gradually changes to bright green as the start-up of the mercury lamp is completed. The current of the mercury lamp during the startup process is about twice the operating current. The time required from startup to stable operation is ~.
Contact

Person: Teacher Li
Consultation phone number:
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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
School electrician delivery Electrician exam practice software
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 combined with safe operation and on-the-job operation and employment experience exercises
Specific electrician training course introduction:
Junior electrician training course introduction:
Safe operation of electricians
.
Basic knowledge of electrical circuits
.
Circuit calculation
.
Series, parallel connection and application of resistors
.
Alternating current, direct current
.
Single-phase alternating current, three-phase alternating current Phase alternating current
.
Transformer, mutual inductor
.
Single-phase ammeter, three-phase ammeter
.
Motor
.
Use of electrical instruments
.
Multimeter
.
Megohmmeter
.
Current clamp meter
.
Ammeter< br/> .
Voltmeter
.
Application of low voltage electrical appliances
.
Fuse
.
Knife switch
.
Circuit breaker
.
Contactor
.
Thermal relay
.
Intermediate relay
.
Time Relay
.
Button
.
Lighting circuit practical operation
.
Industrial power circuit practical operation
.
Motor forward rotation Control
.
Motor interlocking forward and reverse control circuit
.
Double interlocking forward and reverse control circuit
.
Workbench automatic reciprocating control Circuit
.
Motor sequential start control circuit
.
Motor voltage starting control circuit
Intermediate electrician training course training content: electrical control technology, electrician and electronics basics, Maintenance electrician technology, internal and external line electrician
technology,
Electrical equipment operation,
Transformer and motor operation and maintenance programmable controller principles and applications,
Electricity
Advanced training content such as measurement knowledge and practical operations: digital circuit technology, factory power transformation and distribution technology, factory electrical control technology,
programmable controller principles and applications,
microcontroller principles and practical applications Technology,
rectifier and inverter
technology, inverter principle and application technology, actual operation, etc.
can be started again. Otherwise, not only will it fail to start, but the service life of the lamp will also be affected. The reason is: after the lamp goes out, the ions in the discharge tube quickly recombine into atoms, but the temperature inside the discharge tube cannot be cooled quickly. The pressure of mercury vapor is very high. The atomic density is high. If the light is turned on again at this time, although electrons can be emitted between the electrodes, the average free path of the electrons The energy level of a small collision with atoms is not enough to ionize the atoms, so the lamp cannot be discharged and cannot be lit. This only causes inactive loss of the electrode material and reduces the service life of the lamp.