Emulating the full-bridge circuit in the multisim

Abstract

The main contain of this article specifically for audio directional system is hit by digital power amplifier, and to the rear for digital power amplifier stage full-bridge circuit simulation test. It proposes the question of the full-bridge circuit which you must pay attention to in the design process, and the article brings forward the method that improves specifically for these problems. The audio directional system works in the high frequency state, this audio directional system's operating frequency is 30khz, if you choose the transistor's switching speed is lower than the targeted audio system's operating frequency, then would it have the serious distortion. Therefore, the process of the selection of transistors must consider all aspects of the requirements. The switching valves according to pre-control strategy manages the opening sequence and turn-off, ultimately the AC power supply voltage transforms into DC power supply voltage. the multisim has the direct-viewing capture and the function of formidable simulation, it can easily change the simulation's parameters and access to a variety of visual simulation results. carrying on the comparison to the result of the simulation test, which has the nimble feasibility. It is the flexibility of using multisim, You can design a good circuit after carrying on pre-test in transformation effect and the higher harmonic to filter out aspects and so on.