What is a high-voltage DC power supply?
A high-voltage DC power supply, also known as a high-voltage DC power supply, is a voltage regulator with stable current and high output power, capable of reaching several kilowatts. Older high-voltage DC power supplies did not have the same high frequency as today, and were so large that several people could barely move them. Their conversion efficiency and stability were significantly lower than those of modern high-voltage DC power supplies. However, with advances in circuit breaker technology, high-frequency circuit breaker conversion technology has begun to be applied to high-voltage power, resulting in highly stable, safe, and reliable energy storage.
To meet the diverse requirements of a wider range of applications, modern high-voltage DC power supplies now offer automatic voltage regulation and conversion. Many Chinese companies, as well as international manufacturers, are among the first to adopt this technology. This technology has made the performance of high-voltage DC power supplies a "fixed" model, providing a promising model for future power supply development.
What are the uses of high-voltage DC power supplies?
Currently, many high-voltage DC power supplies are manufactured as voltage regulators capable of providing DC power to various high-power devices, such as deuterium lamps, xenon lamps, zinc lamps, and other analytical instrument light sources. Vacuum devices such as avalanche tubes, electron guns, and X-ray tubes can also benefit from high-voltage DC power supplies. High-voltage DC power supplies also support the development of clinical medicine. We may also encounter this type of power supply, namely the high-voltage DC power supply found in many rooms housing large computer equipment.
The basic principles of a high-voltage DC power supply are as follows:
1. An isolation transformer and rectifier convert 220V/380V AC power into the required DC power.
2. A pre-stabilization control and adjustment circuit uses imported components to pre-regulate and initially stabilize the DC voltage, thereby reducing power consumption in the linear adjustment element, improving efficiency, and ensuring high precision and stability in the output voltage source.
3. The linear adjustment element fine-tunes the filtered DC voltage to ensure that the output voltage meets the required value and accuracy requirements.
4. The filter circuit minimizes and absorbs ripple interference and noise from the DC power supply, ensuring low ripple, low noise, and low interference in the DC power supply's output voltage.
5. The DC power supply's control system compares, judges, calculates, and analyzes various detected signals before issuing corresponding control commands to ensure the normal, reliable, and coordinated operation of the DC power supply's overall voltage regulation system. 6. Auxiliary Power Supply and Reference Voltage Source: Provides a high-precision reference voltage source and the power supply required for the DC voltage regulation system and the operation of electronic circuits.
7. Voltage Sampling and Voltage Regulation: Detects and sets the output voltage of the DC regulated power supply.
9. Current Detection Circuit: Obtains the output current of the DC regulated power supply and uses it as information for current limiting or protection control.
10. Drive Circuit: A power amplifier circuit designed to drive actuators.
Main Functions of High-Voltage DC Power Supply
1. DC voltage and current regulation: Continuously adjustable current from 0 (approximately 0) to the rated value, or continuously adjustable voltage from 5% (full scale) to the rated value.
2. Provides comprehensive functions such as overvoltage protection, overcurrent protection, and automatic short-circuit protection.
3. Output Voltage: Digitally displays the output voltage value.
4. Output Current: Digitally displays the output current value.
5. Output voltage and current regulation are both set using high-quality wire-wound multi-turn potentiometers. 5. Automatically shuts off the power supply in the event of a power failure.
In general, high-voltage DC power supplies are voltage regulators with stable current and high output power, widely used in various scenarios. During operation, they achieve stable output through a multi-step circuitry, including rectification via an isolation transformer (converting 220V/380V AC to DC), pre-stabilization adjustment, fine voltage regulation, filtering, and anti-interference. They also offer comprehensive features such as DC voltage and current regulation (continuously adjustable parameters), overvoltage, overcurrent, and short-circuit protection, digital display of output parameters, and automatic output shutdown in the event of a fault.
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