How to troubleshoot when encountering malfunctions with an inverter? Unikeyic helps you quickly identify the cause!
When we use an inverter in our daily lives, we may encounter various malfunctions. In order to address this, it is important to understand the possible causes of these malfunctions. unikeyic provides a lot of strategies regarding inverters, whether for purchasing one or troubleshooting. Next, let's discuss several common scenarios and solutions when using an inverter in practical applications.
Measuring the voltage transfer characteristic of an inverter yields zero.
When measuring the voltage transfer characteristic curve of an inverter, if the obtained voltage value is zero, considerations should be made regarding coupling methods and chip connections. When the coupling method of the oscilloscope test channel is not direct current, two channel coupling methods will appear, and the solution is to set the coupling method to direct current. Furthermore, if the power supply is not connected to pin 14 of the chip, a zero voltage may also occur. In this case, measure the voltages of pins 14 and 7 of the chip. If there is a wire disconnect, you can directly measure the input and output voltages on the pins. Additionally, if the inverter itself is faulty, judgment needs to be made based on voltage, current, and logic relationships.
Damage to MOS transistors may be caused by inverters.
Many people encounter situations where MOS transistors are damaged during testing, and if it is due to a short circuit, the inverter should be checked first. For example, when the amplitude of the input signal of the inverter is less than its own supply voltage, there is a probability of causing a short circuit. Therefore, when designing circuits, it is important to be aware that if there is any abnormality with MOS transistors or bipolar transistors in the circuit, the inverter should be checked for faults first.
How to solve abnormalities in an inverter in a circuit.
As mentioned earlier, when encountering abnormalities in MOS transistors during circuit design and debugging, the inverter should first be ruled out as the cause of the fault and then troubleshooting strategies can be attempted. Controlling the amplitude of the circuit's control signal to match the inverter's supply voltage level can help. Additionally, connecting a pull-down resistor to the output terminal of the inverter can force the signal to be pulled low.
The above is a summary of the potential issues one may encounter when using an inverter shared by Unikeyic in daily life. Whether it's abnormal numerical values or anomalies in MOS transistors or bipolar transistors, one should first check whether the inverter is malfunctioning or incorrectly configured, in order to better identify the root cause of the problem.
