Understanding & Calculating Bipolar Transistor Operating Point: Key Factors & Tips (90)

Hello!
I am a beginner in electronics. I'm just learning in electronic school. And I have such a naughty teacher who can't explain anything. In six months, 26 people in the class were at risk of failing out of 28 people in the class.

Let me tell you an even more interesting thing, I started the 2nd class and I got two subjects: 1 is the basics of electronics, i.e. what is a resistor, capacitor, transistor. And the second item ANALOGUE SYSTEMS.

One day it happened that we had both of these lessons. On the basics we had the topic "Transistor - structure and operation" and on the same day we had a test entitled "calculation of the bipolar transistor working point"
xD xD xD xD xD

74% of the class was unsatisfactory

That's why I have a few questions. I hope you will help me.

What is a work point?
What is the working point?
What does the working point depend on?
How to calculate the work point ???????????????????

The transistor's operating point is something such that the transistor amplifies the largest possible amplidude without distortions. This point is in the middle of the AB line on the output characteristic. It is marked if I (collector) is zero then U (collector emitter) is maximum. And you mark on the characteristic on the axis Uce (as Uz) A point A if Uce is 0 then Ic is calculated from the formula Uz \ Rodb. It is like that, unless I am wrong, let someone correct me.

For all your questions, see EDW 4/99 and 5/99 "Transistors for Beginners. Common Emitter Circuit." It is really well described there and after reading this article you will know and understand it 100%. I encourage you to read the whole "transistors for beginners" from EDW there it is really great, it is described. I will not describe it here because it would take a lot of space. Reach for these materials and everything will become clear
Regards

ok thanks, i just meant some source

Hello ... The operating point of the transistor (in the amplifier) is the voltage at the ends of the transistor and the currents flowing through the transistor when the input voltage is zero. The class of the amplifier A, B, AB depends on the choice of the operating point. It can be calculated from the value of the elements biasing the transistor ... Greetings ....