- Products
- Application
-
Support
Support -
News
News -
About Us
About Us -
Contact Us
Contact Us
Development Trends of High Power High Voltage Power Supplies and Switching Power Supplies
- 2023-11-17
1、 Classification of high-power and high-voltage power sources
Generally speaking, high-power power supplies can be divided into linear power supplies and switching power supplies.
(1) Linear power sources mainly include power frequency transformers, high-power rectifier circuits, output rectifier filters, control circuits, protection circuits, etc. This method converts AC power through a transformer, rectifies and filters the DC voltage through a rectifier circuit, and adjusts the output voltage through voltage feedback to obtain high-precision DC voltage.
(2) Switching power supply is achieved through electronic technology. Firstly, the input AC of the power grid is rectified to DC, and the switch tube is controlled by the high-frequency pulse width modulation signal of the inverter to output a serrated high-frequency AC voltage, which is applied to the primary of the switching transformer. The secondary induction of the switching transformer produces high-frequency voltage, which is rectified and filtered to provide the required DC voltage for the load while preventing high-frequency noise from interfering with the load. The output part is fed back to the control circuit through a certain circuit to control the pulse width modulation duty cycle and achieve stable output.
Its characteristic is that when the power is the same, the higher the switching frequency, the smaller the volume of the switching transformer, but the higher the requirements for the switching transistor. The secondary of a switching transformer can have multiple windings, or a winding can have multiple taps to obtain the required output.
In fact, there are already special chips with high integration, which makes the peripheral circuits very simple, even without the need for debugging. For example, a switching power supply chip (or module) can be made into a basic switching power supply by matching some resistive and capacitive components and switching transformers.
(3) According to different requirements, use direct current in different occasions. The output of a linear power supply is linear DC. This technology is very mature. It can achieve high stability, high quality, small ripple, no interference, and no noise, and can be used in high demand situations. Its disadvantages are large volume, heavy weight, high power consumption, and low conversion efficiency. This type of power supply is not suitable for the needs of computers and other devices and will gradually be replaced by switching power supplies. This is the traditional linear power supply used in the past. Secondly, there is a switching power supply, which generates large spikes and ripples during operation. Measures should be taken. Its advantages are light weight, large capacity, high efficiency, small size, and low heat loss. Its drawbacks are high noise and electromagnetic interference, but the current shielding technology is already in place.
Generally speaking, high-power power supplies can be divided into linear power supplies and switching power supplies.
(1) Linear power sources mainly include power frequency transformers, high-power rectifier circuits, output rectifier filters, control circuits, protection circuits, etc. This method converts AC power through a transformer, rectifies and filters the DC voltage through a rectifier circuit, and adjusts the output voltage through voltage feedback to obtain high-precision DC voltage.
(2) Switching power supply is achieved through electronic technology. Firstly, the input AC of the power grid is rectified to DC, and the switch tube is controlled by the high-frequency pulse width modulation signal of the inverter to output a serrated high-frequency AC voltage, which is applied to the primary of the switching transformer. The secondary induction of the switching transformer produces high-frequency voltage, which is rectified and filtered to provide the required DC voltage for the load while preventing high-frequency noise from interfering with the load. The output part is fed back to the control circuit through a certain circuit to control the pulse width modulation duty cycle and achieve stable output.
Its characteristic is that when the power is the same, the higher the switching frequency, the smaller the volume of the switching transformer, but the higher the requirements for the switching transistor. The secondary of a switching transformer can have multiple windings, or a winding can have multiple taps to obtain the required output.
In fact, there are already special chips with high integration, which makes the peripheral circuits very simple, even without the need for debugging. For example, a switching power supply chip (or module) can be made into a basic switching power supply by matching some resistive and capacitive components and switching transformers.
(3) According to different requirements, use direct current in different occasions. The output of a linear power supply is linear DC. This technology is very mature. It can achieve high stability, high quality, small ripple, no interference, and no noise, and can be used in high demand situations. Its disadvantages are large volume, heavy weight, high power consumption, and low conversion efficiency. This type of power supply is not suitable for the needs of computers and other devices and will gradually be replaced by switching power supplies. This is the traditional linear power supply used in the past. Secondly, there is a switching power supply, which generates large spikes and ripples during operation. Measures should be taken. Its advantages are light weight, large capacity, high efficiency, small size, and low heat loss. Its drawbacks are high noise and electromagnetic interference, but the current shielding technology is already in place.
Related News
- What are the classifications of security power supplies
- Linear regulated power supply: According to convention, linear regulated power supply can be divided into transformer type regulated power supply and switch type linear regulated power supply, two types
- Explanation of the importance of security power supply
Latest News
- What are the classifications of security power supplies
- Linear regulated power supply: According to convention, linear regulated power supply can be divided into transformer type regulated power supply and switch type linear regulated power supply, two types
- Explanation of the importance of security power supply
© 2023 Shenzhen Xinlixun Technology Co., Ltd. All Rights Reserved.
