The problem here is that one control port supplies power to the bases of three PNP transistors. When one transistor fails, it cannot enter the saturation zone. Due to the different initial values of VBE and HFE for each transistor, which vary greatly with temperature changes, the three transistors cannot be biased correctly. The transistor with lower VBE has the highest bias resistance current, while the bias current of the other two transistors appears smaller.
The basic working principles of PNP semiconductor transistor and NPN semiconductor transistor are exactly the same. Taking NPN semiconductor transistor as an example, we will explain its internal current transmission process and then introduce its working principle.
Schottky diode is a semiconductor device that has a shorter voltage drop and recovery time compared to ordinary diodes, and is therefore widely used in many circuits.
Heating is a common process in many industrial and household applications, which can be used for various purposes such as cooking food, processing materials, and heating water.
In our work, we often encounter situations where equipment stops running due to damaged rectifier diodes. Faced with such situations, not only does it reduce efficiency, but it also increases costs.
TVS tube (transient voltage suppression diode) is a new product developed on the basis of voltage regulator technology. It is one of the new high-efficiency circuit protection devices, with a response time of P seconds and high wave absorption ability.
