1.What is a DC power supply?
Devices that can form a stable current in the circuit, such as dry batteries, storage batteries, DC generators, etc., are called DC regulated power supplies.
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 lowWhen the two electrodes are connected to the circuit, the DC power supply can maintain a stable potential difference between the two electrodes, so as to form a stable current from the positive electrode to the negative electrode in the external circuit.
2.What is a DC power system?
DC regulated power supply system is used in hydropower, thermal power plants, all kinds of substations and other users who use DC power supply equipment, to provide DC regulated power supply for signal equipment, protection, automatic equipment, accident lighting, emergency power supply and circuit breaker opening and closing operations. The DC power supply system is an independent power supply, which is not affected by the generator, plant power consumption and system operation method, and in the case of external AC power interruption, it ensures that the backup power supply-battery continues to provide DC power supply equipment.
3.How to plan an adjustable DC power supply?
Power MOSFET is a kind of unipolar voltage control equipment, which not only has the ability to self-shut-off, but also has the advantages of small driving power and fast turn-off speed, and is a commonly used switching equipment in the current switching adjustable DC power supply. It is controlled by MOSFETSwitching power suppliesIt has the advantages of small size, light weight, high efficiency and low cost, 4Can acid electrodes be burned with DC power supply?
The magnetic deflection of the DC regulated power supply is relatively large, which can be improved by lower current and changing the welding angle of the electrodeFor alkaline electrodes, the effect of magnetic bias blowing is also very large;Only when the arc stability is good can the AC power supply be used, and the arc stability of the acid electrode is good, the AC power supply is generally used, and the alkaline demand coating can be used when the fluorite content is high;Therefore, for acid electrodes, it is possible to ensure grounding and small current;However, it is better to use alternating current.
5.How to change a 12-volt DC power supply to 148 volt output?
If it is a power supply with linear regulation, the parameters of the linear regulator part should be adjusted, it is more convenient to adjust the adjustable voltage regulator module, and the reference can be adjusted directly, if it is a fixed regulator block, a 28V thermobaric tube, so that the output voltage is improved by 28V, but the voltage before regulation should be measured in advance, at least 175V or more, otherwise try to increase the input voltage to ensure that the differential voltage is adjusted.
6.What Occupation Needs DC Power Supply?
Any place and any unit needs DC regulated power supply, just a few of them, such as communication system, power system, railway system, hospital system, education system, and traffic command system.
7.How to choose a DC power supply?
When people plan electrical circuit modules or finalize new products, they rarely carefully consider the selection of supporting power supplies, and do not re-evaluate this problem until they find that the problem lies in the power supply part. In order to be helpful, the selection of a DC regulated power supply should be based on the parameters of the DC regulated power supply and the potential impact of the unit under test (UUT) or other circuit system.