When we use high-frequency DC power supply in daily life, there are many doubts about the rectification, voltage reduction and function of high-frequency DC power supply. Today, we will introduce the simple principle and provide ideas and methods to answer questions such as the similarities and differences between other power supplies.
Solutions for rectification, voltage reduction and function of high-frequency DC power supply
Ⅰ. What is the working principle of high-frequency high-voltage DC power supply
The power supply mode of high-frequency high-voltage DC power supply (called high-frequency power supply) is pure DC and intermittent power supply. The control method is mainly frequency modulation control, and some are amplitude modulation control.
The basic principle is to rectify the three-phase industrial frequency input power supply into DC power, invert it into 10kHz or higher high-frequency AC power through the inverter circuit, increase the voltage through the high-frequency transformer, and rectify and filter it by the high-frequency rectifier, and form a 10kHz high-frequency pulsating current to provide the electric field of the electrostatic precipitator.
Ⅱ.what are the similarities and differences between high-frequency DC high-frequency power supply, single-phase power supply, high-frequency AC DC power supply and three-phase power supply?
High-frequency DC power supply has two electrodes, a positive electrode and a negative electrode. The positive electrode has a high potential, while the negative electrode has a low potential.
By connecting the two electrodes to the circuit, the potential difference between the two ends of the circuit can be kept constant and connected to the external circuit. The current is formed from the positive electrode to the negative electrode of the dry cell, storage battery, etc.
This phase is a phase. The power plant has 3 live wires and 1 neutral wire. The phase difference between the three power lines is 120 degrees. Single-phase electricity refers to the neutral line shared by one live wire.
Ⅲ.how to replace the universal charging high-frequency DC power supply with a high-frequency DC power supply?
The two output lines of the universal charging are positive and negative DC. As long as the voltage is reasonable and the current is not overloaded, it can be directly used as a high-frequency DC power supply.
For electrical equipment that requires high-frequency DC, voltage stabilization and filtering electronic components can be installed between electrical equipment.
Ⅳ. How to provide high-frequency DC power only to IC?
We need to distinguish the main difference between the high-voltage or low-voltage area and the ground line. The high-voltage ground line is the negative DC generated by rectifying the main power supply (ie, the high-frequency DC power ground). It is usually connected to the ground (ground line) that is the power ground.
