In order to verify the characteristics of the IGBT single tube, the training box conducted high-frequency, high-voltage, and high-current experiments on the IGBT single tube, and compared the IGBT tube with ordinary triodes. It can be seen from the experiments that the IGBT single tube is indeed different from ordinary triodes.
I. Features
1. IGBT high-frequency characteristic test - Use a high-frequency signal generator to add control signals to the gate G of the IGBT tube and the base B of the ordinary triode, ground the emitter E, add an LED light-emitting diode to the collector C, and use a dual-channel oscilloscope to simultaneously observe the base B and collector C signal waveforms, gradually increase the signal frequency from low to high, observe when the input and output waveforms begin to be out of sync, and record the frequency values of the IGBT tube and the ordinary triode when they are out of sync. By comparing the experimental data, it can be concluded that IGBT has high-frequency adaptability characteristics.
2. IGBT high current characteristics - by adding a small current and low voltage control signal to the IGBT gate B, the IGBT tube is controlled to be turned on and off. When the emitter is grounded, and the collector is connected to a power resistor through a +12V power supply and a fuse, the IGBT tube is turned on, the power resistor heats up; when the IGBT tube is turned off, no current flows through the power resistor and no heat is generated. Observe the current flowing through the power resistor and check whether the fuse is blown, to make a record. Then use the same method and steps to replace the IGBT tube with an ordinary triode, observe the heating of the power resistor, and record the current value and whether the fuse is blown. Compare the experimental data of different tubes and conclude that IGBT has high current adaptability characteristics.
3. IGBT high voltage characteristics - add a small current low voltage control signal to the IGBT gate G to control the IGBT tube to turn on and off, the emitter is grounded, the collector is connected to an electrical bulb through a 110V switching power supply and a fuse, and the working conditions of the electrical appliance and the IGBT tube are observed. Replace the IGBT tube with an ordinary triode, observe the working conditions of the electrical appliance and the triode, and record the phenomenon at the same time. Compare the experimental phenomena and fuse burnout conditions of different tubes, and conclude that the IGBT tube has high voltage adaptation characteristics.
III. Basic Parameter
1. Dimensions: 435mmx325mmx200mm(length x width x height)
2. Approximate weight: about 5KG
3. Operating voltage: AC220V
4. Working temperature: -20℃ - +40℃
5. Working power: ≤300W