GDB021BE ABB 电源板

ABB GDB021BE GDBO21BE01 HIEE300766R0001 电源板
当晶体管基极为高电平时，晶体管饱和导通，等效电路如图3所示，此时电感L储存能量，电容C充电。当晶体管基极为低电平时，晶体管截止，等效电路如图4所示，此时电感L释放能量，电容C放电。通常我们的PCB板上还有采样电路反馈电路，以此来调节基极控制电压的占空比，来达到稳压的目的，同时，由于负载和晶体管串联，输出电压小于输入电压，所以又叫降压开关电路(buck开关电路)。对应的并联开关电路原理相似，同时由于晶体管并联，电感产生的感应电动势与电压相叠加后作用于负载，所以输出电压会高于输入电压

GDB021BE

GDB021BE

ABB GDB021BE GDBO21BE01 HIEE300766R0001 Power module
When the transistor base is high current level, the transistor is saturated and on, and the equivalent circuit is shown in Figure 3. At this time, the inductor L stores energy and the capacitor C charges. When the transistor base is at low current level, the transistor is cut off, and the equivalent circuit is shown in Figure 4. At this time, the inductor L releases energy and the capacitor C discharges. Usually our PCB board also has a sampling circuit feedback circuit, in order to adjust the duty cycle of the base control voltage, to achieve the purpose of voltage regulation, at the same time, because the load and the transistor in series, the output voltage is less than the input voltage, so it is also called buck switching circuit (buck switching circuit). The principle of the corresponding parallel switching circuit is similar, and because the transistors are in parallel, the induced electromotive force generated by the inductor acts on the load after superimposed with the voltage, so the output voltage will be higher than the input voltage
Description
Based on the rules given above, GDB021BE outputs the FlexLogic “equation for relay 2 as shown above. On the left is a bunch of boxes showing FlexLogic messages for output relay 2. To the right of a stack of boxes is an illustration of how to explain this equation. In this example, the inputs for the four-input OR gate are the percent Diff OP, the Inst Diff OP, the output of the XOR gate, and the output of the AND gate. GDB021BE dual input with gate input is gdb021be non-gate output and output relay 2. The input for the “Not” gate is logical input 2. The inputs for a two-input XOR gate are virtual output 1 and logical nput 1. For all these doors, the input precedes the door itself.

GDB021BE