The growth path of hardware engineers (0) -- Understanding components

List of articles

1. Component foundation
2. Circuit design
3.PCB Design
4. Element welding
5. Board debugging
6. Programming
7. Algorithm learning
8. To write exe
9. Test standard
10. Project examples
11. Occupation planning

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Preface

An ordinary junior college student , With what to save your future ？

Send it to you who can't find the direction of struggle after graduation （ Update from time to time every week ）

China computer technology professional qualification network
Shanghai Engineering Series computer professional intermediate professional and technical position qualification evaluation

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In order to prevent seeing components and parts in the future and not knowing , Or do not know that such components exist , This chapter is specially opened .

1、 resistance

①、 Chip resistance

②、 Metal film resistance

③、 Cement resistance

④、 Braking resistance

⑤、 Potentiometer

⑥、 Varistor

⑦、 Thermistor

⑧、 Photosensitive resistor

⑨、 Drag removal

⑩、 Power type thick film resistor

⑪、 Wire wound potentiometer

2、 capacitance

①、 Aluminum electrolytic capacitor

②、 Chip capacitors

③、 Ceramic capacitor

④、 Monolithic capacitor

⑤、 Tantalum capacitance

⑥、CBB capacitance

⑦、 Adjustable capacitance

⑧、 High voltage ceramic capacitor

⑨、CBB61 Starting capacitor

⑩、 Safety regulation capacitor

X capacitance






Y capacitance

⑪、 Correct capacitance

3、 inductance

①、 I-shaped inductor

②、 Chip power inductor

③、 Color coded inductance

④、 Integrated power inductor

⑤、 CD54 Chip power inductor

⑥、 Common mode choke

⑦、 Ring inductor

⑧、2012 Laminated inductor

⑧、 Through the heart inductance

⑧、 SMD common mode inductor

⑨、 Chip Bead

⑩、 A magnetic ring

4、 diode

①、 Infrared laser diode

②、 Infrared tube （ Opposed photoelectric switch ）

③、 Infrared tube （ Slot type photoelectric switch ）

④、 rectifier 、 Bridge pile

⑤、 Rectifier diode

5、 triode

①、 triode

②、 Field effect tube

③、 Thyristor

6、 Operational release

7、 Common chips

8、 Chip heat dissipation

①、 Heat sink （ Pure aluminum ）

②、 Heat sink （ Pure copper ）

③、 Silicone gasket

④、 Thermal silicone grease

⑤、 Pure copper water cooling head

⑥、 The wind is cold

⑦、 Semiconductor cooling

⑧、 Heat conducting double-sided tape

⑨、 Finned radiator

⑩、 expand

The heat dissipation process of oil immersed transformer is ：
　　 The iron core and coil first transfer heat to the oil near it , Raise the temperature of the oil . The volume of oil with high temperature increases , The specific gravity decreases , Just move towards the upper part of the fuel tank . The cold oil will supplement the natural movement to the original position of the hot oil . The hot oil releases heat along the tank wall or radiator pipe , It is taken away by the surrounding air through the box wall or pipe wall , After the temperature decreases, it returns to the lower part of the oil tank to participate in the circulation . such , Due to the difference of oil temperature , Produced the natural circulation of oil . The hot oil comes from the upper part of the transformer oil tank , Along the radiator （ Along the tank wall without radiator ） The inner surface of is facing the lower class , In the process of downward flow, heat is transferred to the air through the pipe wall or box wall （ wind ）, The cooled oil enters the oil tank from the lower part of the radiator , Then it rises through each oil passage , Take away the heat of the coil and iron core in the rising process , The hot oil is collected in the upper part of the oil tank , such , Cycle again and again .
　　 The oil immersed self cooling transformer depends on the oil tank wall （ Or radiator pipe wall ） Radiation of , And the natural convection of the air around the transformer , Take the heat away from the surface of the oil tank . This kind of transformer is designed to increase the heat dissipation surface , The walls of some boxes are wavy , Some are welded with pipes , Some are equipped with radiators , To promote oil convection . Distribution transformers and low-voltage transformers in power plants belong to this cooling method .
　　

9、 Communication harness

①、 DuPont line

②、28AWG Ethernet cable

③、FFC/FPC ffc

④、 Custom silicone harness

10、 The motor

（ Please note that , Transformer belongs to motor , It does not belong to the power supply ）

①、 transformer

Custom transformer on the circuit board

Oil immersed transformer at the entrance of the village


Special ring transformer for audio

Industrial control transformer

②、 Toy motor

③、 DC motor

④、 Hollow cup motor

⑤、 Stepper motor

⑥、 Single phase asynchronous motor

This motor should be equipped with a starting capacitor

⑦、 Three phase asynchronous motor

⑧、 Water pump

11、 Power Supply

①、 Switching Mode Power Supply

Please pay attention to the power supply temperature

②、220V Pinzi socket

③、 The fuse

④、 The button battery

12、 Key

①、 Capacitive film touch button

②、 Capacitive PCB Touch the button

③、 Capacitive ITO Touch the button

13、 Terminal block

①、XH 2.5mm 1x2P Direct insertion Tinning

②、XK127-5.0MM Screw type PCB Terminal block

14、 sensor

①、 The micro switch

②、 electromagnet

Push pull electromagnet