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Dongguan led waterproof power supply, switching power supply selection guide
Author:AdminDate:2013-9-28View:3204

Dongguan led waterproof power supply, switching power supply selection guide

As the heart of power electronic equipment, electronic equipment and safety has a crucial role in. So in the electronic equipment system development stage should bepower of choice, to choose power supply rather than in the whole system equipment is completed, this will delay the time for system development, increasing the cost of the system.

Consider the question need to choose Dongguan led waterproof power switch power supply is mainly:

Output power output channels of A. power supply;

The size of B. power supply;

Installation of C. power supply and installation hole;

Cooling method of D. power supply;

E. power position in the system and walk the line;

The f. environment temperature;

G. insulation strength;

H. electromagnetic compatibility.

The 1 Dongguan led waterproof power switch power supply with a new imported components, using advanced technology, elaborate design and manufacturing, eachpower supply before they leave the factory after the aging test of one hundred percent, can be in 45 DEG C, full of work for more than a year. But in order to improve the system reliability, the proposed power working in 50%~80% load is better, which assumed power is 50W, should choose the output power of 75W~100Wpower supply.

2 to the selection of manufacturers of standard power, size and output voltageincludes standard. Standard products manufacturers will generally have inventory,after sending samples and orders, delivery will be faster; relatively speaking, special size and special output voltage, it will increase the time and cost of development.

The output voltage of the power required for the number of number 3, choosestandard power opportunity is smaller, while increasing the number of output voltagewill increase costs, currently three, source of multi output four output more common.So, in the choice of power supply should minimize the number of outputs, try to usethe power of multiple output common grounding.

4 clear input voltage range, the AC input as an example, the input voltage specification commonly used with 110V, 220V, so there 110V, 220V AC switching, as well as the universal input voltage (AC:85V~264V) of three kinds of specifications. In the choice of input voltage specification should be area will use explicit system, such as to the country exports the United States, Japan and other electric 110V AC power,can choose 110V AC input; but in electric for domestic use or export countries for220V AC input power supply voltage input, can choose the general. The selectedinput voltage specification, should be clear about the input voltage range, generally speaking, the input voltage range of ± 20% in city and most of the area has been able to meet the requirements, if the use of power system is special (such as electric power system, small hydropower in mountain areas, remote rural) high voltage, power grid or lower volatility, should choose the power input voltage range is wide to meet specific needs, but also brings the rise in the cost of.

The 5 Dongguan led waterproof power switch power consumes a part of power at work, and in the form of heat release, so the user in system design (especially theclosed system) should consider the heat problem. If the system can form natural convection air good, and power in the wind, can consider to choose power supplynatural cooling system; or a fan, and ensure the wind through the entire power supply, can also choose to supply natural cooling system; if the ventilation is poor, or internal temperature system is relatively high, can consider to choose power windcooling.

6 there are some special circumstances, such as: output with motor, printer, lighting,large relay and so on the impact of negative load, large instantaneous current, best can provide a maximum load current, so that the power supply manufacturers specialized design; system for lightning prone areas, or on the top of the mountainand lightning sensitive position, for lightning protection system design at the same time, the best choice of power with lightning protection function, to guarantee safety operation of system equipment.

Switch power supply 7 medical equipment used in the insulation should be more than AC3.75KV, user statement, we can meet the special requirements of users.

8 users in the field use, equipment failure, the majority of customers doubt the ripple,but interference power supply ripple on the equipment is limited, ripple measurement,the application of 20M analog oscilloscope, the output test end parallel 104/100Vceramic capacitors and 100Uf/100V electrolytic capacitor, the measurement data for the real data, we believe that the electromagnetic compatibility is a very important parameter.

, -webkit-text-stroke-width: 0px" class="ordinary-output target-output">8 users in the field use, equipment failure, the majority of customers doubt the ripple,but interference power supply ripple on the equipment is limited, ripple measurement,the application of 20M analog oscilloscope, the output test end parallel 104/100Vceramic capacitors and 100Uf/100V electrolytic capacitor, the measurement data for the real data, we believe that the electromagnetic compatibility is a very important parameter.

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