How much is the monthly salary of an electronic and electrical maintenance engineer?

depending on the good school to answer for you: generally, it is 6, to 1,

We will combine the advantages of two different teaching modes, namely, professional training schools and industrial maintenance companies, to train students. The teaching focuses on practical practice, focusing on practical ability and practical operation effect. Strive to let the students learn more knowledge in the shortest time, and teach them to master the above technologies as soon as possible. ?

1. Basic knowledge of various electronic components (function, identification and quality detection methods)?

types of resistors, marking, identification, detection and selection

types of potentiometers, detection and selection

types of capacitors, marking, identification, detection and selection

types, shapes, applications, detection and selection of inductors

types, main characteristic parameters, shapes, detection and selection of transformers < Working state, function, main performance parameters, detection (tube, pin, good or bad), type of

field effect tube, working state, main performance parameters, type of

thyristor, working principle, main performance parameters, type of

switch for photoelectric devices (photodiode, phototransistor, optocoupler). Measure

the type of relay, main parameters, relay shape, measure

the type of integrated circuit, main parameters, pin identification, detection

the quality of Hall sensor, usage of isolation transformer

IGBT, IPM? The test method of

mastering the detection and judgment methods of all kinds of failed components of circuit boards

mastering several fast and effective component test methods that are specially and exclusively summarized

Second, Usage of common maintenance tools and instruments

BGA repair table

DC stabilized power supply

online tester

maintenance power supply

oscilloscope

pointer multimeter

digital multimeter

short circuit tracker

digital bridge

electric soldering iron

solder wire

flux

tin absorption. > integrated circuit tester

transistor tester

Master the correct use of all kinds of maintenance tools for industrial control circuit boards

Third, operational amplifier circuit analysis and detection?

internal structure of operational amplifier, Understanding of imaginary short circuit

analysis of noninverting proportional amplifier

analysis of inverting proportional amplifier

analysis of inverting adder

analysis of subtraction circuit

analysis of differential operation circuit

analysis of first-order low-pass filter circuit

analysis of first-order Qualcomm filter circuit

analysis of comparator

analysis of differential amplifier circuit

. Test circuit analysis

maintenance methods of operational amplifier related circuits

Learn to analyze the circuits of more than 1 operational amplifiers

Master the maintenance methods and steps of any operational amplifier circuit

and so on ...

Fourth, digital logic circuit analysis and maintenance?

Common faults of digital logic chips

How to test the quality of logic devices online

Understanding and measuring methods of integrated circuit IC such as optocoupler and operational amplifier;

measuring the quality of various ics such as p>UC3844, NE555 and ULN23;

how to use the integrated circuit IC tester;

related contents of analog circuits and digital circuits;

judging the quality of logic IC, reading and programming programs, and using various programmers;

analysis and maintenance of digital terminal control circuit and analog terminal circuit;

analysis of basic and nor logic circuits

analysis of common combinational logic circuits

encoder,? Decoder circuit analysis

flip-flop,? Latch and counter circuit analysis

Digital logic circuit detection

Memory (ROM, RAM, EEPROM, FLASH)? Working principle and inspection

test

Understand the working principle of digital logic circuits and related chip testing methods

Master the steps of various digital circuit fault maintenance methods

and so on ...

V. Analysis of switching power supply circuits?

rectifier circuit

filter circuit

working principle of switching power supply

principle circuit and detection method of switching power supply

principle analysis and detection idea of switching power supply circuit

judgment of p>UC3844 and explanation of various power supply circuits;

explanation of step-down circuit

explanation of step-up circuit

reverse polarity? Circuit explanation

Push-pull PWM circuit explanation

Forward converter topology

Half-bridge converter

Full-bridge converter

Flyback converter

PFC? Circuit explanation

The switching power supply of frequency converter runs the circuit. Common fault analysis and countermeasures

Understand the circuit working principle of linear power supply and most switching power supplies

Master the maintenance methods and steps of complex switching power supplies, etc ...

V. Main circuit analysis?

explain the main circuit of frequency converter and its working principle (AC-DC-AC);

Preliminary judgment on the quality of rectifier, IGBT inverter, brake and other circuits (explain and measure the high and low power real machines separately);

maintenance method and judgment of main circuit of series bulb; Control mode of charging relay;

judgment and measurement of bridge stack, IGBT, IPM intelligent module and SCR, as well as trigger method, measurement of withstand voltage, meaning of module model and substitution principle, etc.

Clever handling methods for the damage of the internal thermistor of IGBT, and emergency measures to save money for the single-channel damage of low-power IGBT;

and so on ... VI. Analysis of driving circuit and detection and substitution of common optocouplers?

Analysis of various driving circuits

How to use oscilloscope and multimeter to measure the driving quality;

functional diagram of driving optocoupler;

the method of drawing the circuit diagram by yourself;

such as PC923, PC929, a? Measurement methods such as 316J, A312, TLP25 and HCPL312, and analysis of typical driving circuits;

and so on ...

VII. Current, voltage detection and brake control circuit analysis

Analysis and explanation of various detection circuits such as current detection circuit, voltage, temperature, input missing phase and output missing phase;

analysis and maintenance of ten common faults (such as overcurrent, overvoltage, undervoltage, overload, phase loss, no voltage output, etc.);

judging the quality of current transformer;

and common alarm codes (OU\LU\OL\OC\SC\OH\GF);

wait ... eight, Explanation of overall principle and maintenance method

explanation of principle and maintenance of frequency conversion servo main power supply circuit

explanation of principle and maintenance of frequency conversion servo voltage and current detection circuit

explanation of principle and maintenance of frequency conversion servo drive circuit

explanation of principle and maintenance of frequency conversion servo main control circuit

explanation of principle and maintenance of frequency conversion servo encoder circuit

comprehensive understanding of working principle of frequency conversion servo driver

Learn to analyze the faults of various frequency conversion servo drivers

Master the maintenance methods and steps of frequency conversion servo driver faults

IX. CPU motherboard circuit analysis?

1. circuit board maintenance steps?

Xi. principle of industrial control circuit board?

12. What is the maintenance experience of common industrial control circuit boards?

XIII. Functional explanation diagram of IC pins commonly used in industrial control circuits?

wait. ...