What is a linear DC power supply, the working principle of a linear DC regulated power supply
A DC power supply is an alternating current that alternately changes the direction of voltage and current to positive and negative, and is transformed into a direct current with a constant current direction through a rectifier filter device. It is a device that maintains a stable current in the circuit.
A DC power supply is an alternating current that alternately changes the direction of voltage and current to positive and negative, and is transformed into a direct current with a constant current direction through a rectifier filter device. It is a device that maintains a stable current in the circuit.
The DC power supply has two electrodes, positive and negative. The potential of the positive electrode is high, and the potential of the negative electrode is low. When the two electrodes are connected to the circuit, a constant potential difference can be maintained between the two ends of the circuit, thereby forming an external circuit from the positive electrode to the negative electrode. negative current. Now the mainstream DC power supply in the market is divided into three categories: linear DC power supply, thyristor DC power supply and switching DC power supply.
The advantages of linear power supply are: small ripple, high precision, small harmonic interference to the power grid, stable output voltage, and good anti-interference. However, the power of the DC power supply is generally not too high, because the output current of the power supply cannot be too large;
The advantages of the thyristor power supply are: the power can be made very large, and the current can be made very high.
Now the mainstream power supply in the market is switching power supply. The advantages of switching power supply are: high power factor and small size.
What is the difference between a DC regulated power supply and an AC regulated power supply?
The output of the DC stabilized power supply is DC, which shows a straight line waveform on the oscilloscope, and is used in circuits that require DC voltage and current.
The output of the AC regulated power supply is AC, which presents a sinusoidal waveform on the oscilloscope, and is used in circuits that require constant voltage and a certain frequency.
