Functions: such as audio amplification, clock oscillator, etc. Inverters are often used in electronic circuit design.
Chinese name: inverter
Input stage: transistor T 1 and resistor Rb 1.
Intermediate stage: transistor T2 and resistors Rc2 and Re2.
Advantages of TTL: fast working speed, strong load capacity and so on.
Circuit composition and working principle:
The input stage consists of transistor T 1 and resistor Rb 1.
The intermediate stage consists of transistor T2 and resistors Rc2 and Re2.
The output stage consists of transistors T3, T4, D and resistor Rc4. It has a push-pull structure. During normal operation, T4 and T3 are always off and the other is saturated.