The use of LEDs as lighting devices is one of the promising areas in lighting. The high quality of the light itself, high brightness and directivity of the light beam, low power consumption and duration of operation make these devices unique. It is not surprising that good lighting fixtures and spotlights based on powerful LEDs are now appearing , the scope of which is constantly expanding. Automotive industry, LED street lighting, traffic lights and lighting for offices and buildings, billboards and video surveillance - this is not a complete list where you can use these devices.
However, in addition to the advantages, LED-based devices have certain disadvantages. The main one, of course, is the high cost of the device. Also, LEDs are afraid of overvoltages, which must be taken into account when creating projects based on such devices. However, the design of the device is uncomplicated, and even a layman can easily make an LED
lamp with his own hands, using a set of inexpensive parts. Its power is enough to illuminate a room at night. Using LEDs as a night lamp is beneficial, since the consumption of such a device will be several times less than a household device based on
incandescent lamps.
In order to make a
LED lamp with your own hands, we will prepare the necessary details. The housing for the night light can be taken from a standard 5-12 volt power supply. We use the same voltage to power the LEDs. On the outside of the plastic case, drill holes and fix the LEDs. We attach as much as possible, usually fits from three to five - it all depends on the power of the device. Suppose you have five LEDs connected in parallel and with a total power of 100 mA. When the voltage of the power source is 12 volts, it is necessary to limit the consumption of the entire circuit with a 120 ohm resistor. It is also advisable to solder a 100-150 mA fuse. Follow the assembly sequence of the LEDs. Anodes of instruments should
be assembled together and go through the limiting resistor to the plus of the power source, the cathodes, respectively, through the fuse-link to the minus. Pay attention to the power of the power supply. It must exceed the
power consumption of the load. That's it - you made your own LED lamp. Its power is small, but this is enough to illuminate the room at night.
Now you can go further and make a more powerful device that will save you from overpaying for electricity bills. Do-it-yourself LED lighting can also be made for the office, because it is no secret that commercial organizations pay for electricity at high prices. As a housing, you can use a standard fluorescent lamp, removing all parts from it and leaving one housing. We fasten the aluminum LED rulers inside the case and feed the entire circuit from a standard power source. You got an office LED lamp that can cover a large area with the power.