What are the classifications of power adapters?How to solve the power adapter heating?As the application of industrial switching power supply is becoming more and more extensive,large-scale equipment has high requirements for the selection of industrial switching power supply.How to choose an industrial switching power supply?What are the precautions during use?Juyuanhai power adapter manufacturer Let's take a look today!
1.How to choose an industrial switching power supply?
1.First,select the appropriate input voltage specification;
2.Choose the appropriate power.In order to increase the working life of the power supply,a model with 30%more output power rating should be selected.
3.Consider the load characteristics.The added load is a motor,a light bulb or a capacitive load.When the current is large at the moment of starting up,it is necessary to select a suitable power supply to avoid overload.If the load is a motor,the voltage backflow during shutdown should be considered.
4.In addition,it is necessary to consider the temperature of the working environment of the power supply and whether there is any additional auxiliary heat dissipation equipment.The power supply needs to derate the output when the ambient temperature is too high,and the derating curve of the ambient temperature to the output power.
5.Select various functions according to the application requirements:
Protection functions:Over Voltage Protection(OVP),Over Temperature Protection(OTP),Over Load Protection(OLP),etc.
Application functions:signal function(normal power supply,power supply failure),remote control function,telemetry function,parallel function,etc.
Special functions:power factor correction(PFC),uninterruptible power supply(UPS)
6.Select the required safety regulations and electromagnetic compatibility(EMC)certification.
Second,the matters needing attention during the use of high-power switching power supply!
1.Before using the power supply,we must first determine whether the specifications of the input and output voltages are consistent with the nominal values of the power supply used;
2.Before powering on,carefully check whether the input and output leads are connected correctly to prevent damage to the customer's equipment;
3.To install firmly,carefully check whether there is contact between the mounting screws and the power board components,and measure the insulation resistance of the shell and the input and output to prevent electric shock;
4.Carefully check whether the grounding terminal is grounded to prevent safety during use and reduce certain interference;
5.The multi-output power supply is generally divided into main output and auxiliary output.The characteristics of the main output are better than those of the auxiliary output.Generally,the one with the larger output current is the main output.In order to ensure the output load adjustment rate and output dynamics and other indicators,it is generally required that each channel has at least 10%load.If the auxiliary road is used instead of the main road,an appropriate dummy load must be added to the main road.For detailed parameters,please refer to the specifications of the relevant models;
6.Remember not to turn on and off frequently,which will affect the life of the power supply;
7.The working environment and load level of the power supply will also affect its life;
8.It is best to ask the power supply manufacturer to help select a power supply product suitable for the user's equipment;
9.If possible,it is recommended that switching power supply manufacturers conduct professional design according to the equipment itself and the environment in which the equipment is located.
Above we have summarized the purchase of industrial switching power supplies and the precautions during use.If you still have anything unclear,you can contact us,we will introduce you in detail!
Many devices around us need to use power adapters,but what are the classifications of power adapters?How to solve the heat of power adapters?Let's find out together today!
1.Classification of power adapters
There are two main types of power adapters,switching power supply and linear power supply.
1.Switching power supply is a kind of power supply that uses modern electronic technology to control the time ratio of switching on and off to maintain a stable output voltage.The switching power supply of the power adapter is generally composed of pulse width modulation(PWM)control IC and MOSFET
Advantages:high working efficiency,small size,and can work in a wide voltage range.
Disadvantages:greater interference to the power circuit,more difficult to repair when a fault occurs.
2.The linear power supply transforms the AC power through a transformer,rectifies and filters the rectifier circuit to obtain an unsteady DC voltage.To achieve a high-precision DC voltage,the power adapter must adjust the output voltage through a voltage feedback circuit.
Advantages:This power supply technology is mature,the circuit is simple,and there is no interference and noise that switching power supplies have.
Disadvantages:The voltage feedback circuit works in a linear state,the power consumption of the adjustment tube is large,the conversion efficiency is low,and the weight of the equipment is heavy due to the use of an inductive transformer.
Two,five methods and techniques to solve the power adapter heating!
1.Create a good heat dissipation environment,and place the power adapter in a place that is not exposed to sunlight and is ventilated.Remember not to use it at high temperature for too long.If you must use it for a long time,you must pay attention to heat dissipation.You can put the fan aside to assist heat dissipation.
2.A narrow plastic block or metal block can be placed between the adapter and the desktop,which can speed up the heat dissipation of the adapter.
3.In a high-temperature environment,place the adapter on its side to reduce the contact with the ground area,so that the adapter can dissipate heat better and play a cooling effect.
4.The heating of the power adapter is generally caused by battery charging and computer consumption.We can set it in books with battery management software.Such as Lenovo's battery management software-the best battery care on it.Dell also has software,it is OK to set it to prohibit charging.
5.Frequently use a dry soft cloth or paper towel to wipe the dust on the surface of the power adapter to prevent dust from entering the gap and reducing the heat dissipation performance.
The classification of power adapters and the five methods and techniques to solve the heating of power adapters are introduced here,I hope to help you!If you have any questions,please contact us,we will introduce you in detail!
