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[Moved] How to know which electronic circuitry requires which electronic components

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phrbob93

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I am doing college projects of embedded system.

i am at beginner level in hardware, at some stage of hardware implementation i used to download the circuit diagram of a particular project.

but i don't know why a particular grading of transistor or diode is used with the circuitry i just copy it.

how to know why a particular diode or transistor or MOSFET etc is used in a particular circuitry.

how to know these kind of basics?
 

You need to learn about the basics of electricity and electronics to understand how a diode or transistor works and how to design a circuit using them.
Many of us learned it in high school then learned more details in university.

Download the book called "The Art Of Electronics".
 

phrbob93 said:
but i don't know why a particular grading of transistor or diode is used with the circuitry...
Click to expand...
There are two aspects:
1) The limits of the device. e.g. each type of transistor has maximum ratings for voltage, current and power dissipation.
2) The characteristics you need. e.g. different transistors have different current gain, noise etc.
All that info is in the device's datasheet.
 

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