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DC power supply is a device that maintains a stable voltage and current in the circuit

Oct 28, 2022

The basis of a DC power supply is the non-static effect, which allows positive electricity to move from the negative pole of a smaller potential difference through the interior of a switching power supply, maintaining a constant quantity of current in the absence of positive charge alone. To maintain the potential difference between the two electrical levels and produce a stable amount of current, go back to the positive pole with a bigger potential difference. A component that keeps the circuit's voltage and current stable is the DC power supply.


The DC power supply's non-electrostatic force is biased from the negative pole to the positive pole. When the switching power supply (external circuit) is linked to the DC power supply, an amount of current is produced flowing from the positive electrode to the negative electrode as a result of the electric field force being promoted. The action of non-electrostatic force allows current to flow from the negative electrode to the positive electrode in the switching power supply (internal circuit), which in turn causes the mobility of the positive charge to generate a closed circulatory system.


The electromotive force of the switching power supply, which is equivalent to the work done by the non-electrostatic force when the positive electricity of the enterprise moves from the negative pole to the positive pole according to the interior of the switching power supply, is one of the switching power supply's key characteristics.


It can be felt that the electromotive force of the switching power supply is equivalent in value to the potential difference or working voltage between the two sides of the switching power supply when the internal resistance of the switching power supply is disregarded.


Frequently, a serial application of the DC power source is made to achieve a greater AC voltage. The entire internal resistance and electromotive force of each switching power supply are now added together, as is the internal resistance of each switching power supply. Only power circuits with lower current intensities typically employ it due to the increased internal resistance. The DC power supply with an equivalent electromotive force can be placed in series to provide a high current intensity.Currently, the total internal resistance equals the sum of the internal resistances of all the switching power supplies, and the total electromotive force equals the electromotive force of each switching power supply.


The DC power supply comes in a variety of forms. Different types of DC power supplies have various non-electrostatic force and energy conversion characteristics. The non-electrostatic force in chemical batteries (such as dry batteries, batteries, etc.) is oxidation, which is associated with the entire process of melting and accumulation of positive ions. The mechanical energy is transformed into electrical energy when the chemical battery is charged and discharged.

Joule heat and electromagnetic energy. The diffusion effect linked to the temperature difference and the concentration value difference of the electronic device acts as a non-electrostatic force when switching the power supply at a temperature difference (such as metal material temperature difference couple or semiconductor material temperature difference couple). When a switching power supply for temperature differences delivers power to an external circuit, some of the energy is partially transformed into electromagnetic energy. The non-electrostatic force in a DC generator is an electromagnetic effect. Chemical energy is transformed into electromagnetic energy and Joule heat when the DC generator runs the system. When a photovoltaic cell powers a system, light energy is transformed into electrical energy and Joule heat. This results in non-electrostatic forces in solar cells.


12. Laboratory power supply

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