Topic of this article: What are the constant voltage source, constant current source, and constant voltage constant current power supply? What's the difference? How to use it?
Before telling the difference between them, first understand their biggest common point, that is, they are all a kind of switching power supply.
1. Constant voltage source
The ideal constant voltage source means that the output voltage is constant and will not change due to changes in load resistance, input terminal voltage, and temperature. The internal resistance R is equal to zero, but the actual constant voltage source all has an internal resistance R.
For example: Huayao constant voltage source model HYC-240E24, specification 24V10A, connected load resistance is 2.4Ω. When the load resistance changes to 2.5Ω during operation, the output voltage is still 24V, and the output current drops from 10V to 9.6V.
Huayao HYC-240E24 mesh shell constant voltage source
Constant voltage source application: The resistance of the constant voltage source often connected to the device is generally a static resistance, such as surveillance cameras, industrial control boards, etc.
2. Constant current source
The ideal constant current source means that the output current is constant and will not change due to changes in load resistance, input terminal voltage, and temperature, and the internal resistance is infinite.
For example: Huayao constant current source model HYK-240E24, specification 24V10A, connected load resistance is 2.4Ω. In operation, when the load resistance changes to 2.3Ω, the output current is still 10A unchanged, and the output voltage is reduced from 24V to 23V.
Huayao HYK-240E24 mesh shell constant current source
Application of constant current source: The resistance of the load in the common place of constant current source is generally dynamic resistance, such as electrolysis.
3. Constant voltage and constant current power supply
Constant voltage and constant current source refers to a switching power supply with two units of constant voltage and constant current. When the load resistance is a certain value, the power supply is at the critical point of constant voltage and constant current. With the change of resistance, the power supply enters constant voltage or The working state of constant current.
For example: Huayao constant voltage and constant current power supply model HYK-360E24, the specification is 24V15A, and the load resistance is 1.6Ω, which is at the critical point of constant voltage and constant current power supply. When the load resistance is greater than 1.6Ω, the power supply enters a constant voltage state, such as 1.7Ω, the output voltage is still 24V, the current drops to about 14V; but when the load resistance is less than 1.6Ω, the power supply enters a constant current mode, such as 1.5Ω, this The output current is still 15A, but the voltage drops to 22.5V accordingly.
Huayao HYK-360E24 mesh shell constant voltage constant current power supply
Constant voltage and constant current power supply application: constant voltage and constant current power supply is often connected to the device resistance is generally dynamic resistance, such as batteries, capacitors and so on.
================================================== ================================================== ======
Constant voltage constant current power supply **, click for more details. Contact
March 22, 2022
