Views: 0 Author: Site Editor Publish Time: 2024-05-20 Origin: Site
A DC-DC Adapter is a power supply that provides DC voltage on a dedicated and continuous basis. Although electricity is usually transmitted, generated and interfered with in the form of AC power, there are situations where DC power is essential. However, this is only a superficial answer. Before you can thoroughly answer the question of what a DC power supply is, you need to understand some basic information.
How to choose the right DC-DC Adapter correctly?
Can the DC-DC Adapter be connected to the AC side?
What are the functions of the DC-DC Adapter?
The output voltage of the DC-DC Adapter is preferably equal to the voltage required by the notebook. If it is different, it should be as close as possible to the required voltage of the notebook and controlled within ±5% error. This is because the voltage regulator circuit in the notebook generally has Margin design, when the input voltage changes within a certain range, it can work normally and stably; beyond this range, if the voltage is too low, the computer may not work stably or even light the machine; if the voltage is too high, it may burn the voltage stabilizer in the computer circuit. Such as a macro notebook, it requires 15V, 3.36A input, but it can be used normally with a 16V, 3.36A DC-DC Adapter.
1. The ground of the DC output end of the power adapter can be connected to the "ground wire" (PE) of the AC input end.
But once connected in this way, the AC input has to touch the electrical safety device.
2. The ground of the DC output end of the power adapter cannot be connected to the neutral line (N) of the AC input end.
impedance
Impedance: Note the difference with the meaning of resistance. In the world of direct current (DC), the effect of objects on current obstruction is called resistance, but in the field of alternating current (AC), in addition to resistance, capacitance and inductance block current. It also hinders the flow of current. This effect is called reactance, and what we call impedance is the sum of resistance and reactance on a vector.
return loss
In high-frequency applications, it reflects the proportion of traveling waves that are reflected at the transition point of the protection device. Under this parameter, the matching degree of the surge impedance between the protection device and the system can be directly measured. For data transmission systems, in order to prevent bit errors, The return loss of the system must be greater than 20dB.
Maximum discharge current
The arrester must withstand a test current of 8/20 waveform (see DIN VDE 0432/10.78 part 3) without causing damage. The arrester must withstand 2 times this high current.
Power-off protection
Function The so-called power-off protection function means that the switching device can store the last channel switching command during normal operation. When a power failure occurs due to an emergency, the device will still save this command, and the device will automatically restore to the original after power-on. Toggle status.
HIENT Power Technology Co., Ltd. is the technology enterprises engaged in the development, design, manufacture and sale of power supply and power system.
HIENT Power Technology Co., Ltd. is the technology enterprises engaged in the development, design, manufacture and sale of power supply and power system.Power supply product includes adapter, charger, industry power... Read More
