LED electronic light box simple production method

1, production: the use of acrylic panels, plastic panels, or other insulating materials, I use black 2.5mm double-layer aluminum composite panel mostly. The word to be done first with a single-sided adhesive paper engraved, pasted on the cut size of the aluminum composite panel, with a drill or engraving machine to hit the hole (spacing according to the size of the word, generally from 10-15mm a), the size of the hole diameter of 5mm can not be too large. With the F5 spotlight to do the word is the best hole spacing greater than 15mm, the reason we try to know. If you use 546 elliptic lamp, hole distance can be controlled between 20-10mm, the closer the better.

2, series connection: the LED by -, -, ...... -, - series welding, resulting in a positive pole (make a mark A) and a negative pole (make a mark K-). The connections of the legs need to be soldered with tin, or they can be screwed together and soldered. Always remember: Always solder. Because the legs of the LED is iron silver-plated, once the current through the moisture will soon rust, will cause hidden danger to the light box, but also to the after-sales service will bring a lot of trouble. Now a lot of connected lights, with connected lights can save a lot of time to improve productivity, but only 20 lights per row, welding can not be avoided. Note: The long pin of the light-emitting diode is "+" (positive) pole, the short pin is "-" (negative) pole.

3, grouping (string): in accordance with the schedule is not greater than the maximum number of light-emitting diodes of various colors can be connected in series, such as each string of red LED should not be more than 120. The reason is very simple, the controller's output is about 210V DC, the red light operating voltage is about 2V, that is to say, each after a LED light will be bucked 2V, if the number of LEDs is too much, then the controller's output voltage is not up to the string of lights required for normal operation of the voltage, the string of lights will not be bright, or brightness is too low.

Note: Schedule with "*" is not recommended, when the number of series LEDs close to or over the number of with "*", easy to cause circuit instability, it is desirable to be divided into two strings or more strings connected in parallel for a group.

4, the series into the resistor: according to the number of schedules will be the appropriate number of resistors into each string of light-emitting diodes, resistors without positive and negative points, and can be strung in the string of light-emitting diodes in any two light-emitting diodes between. String in the need for wire connection to save time and effort to save wire.

Note: Due to the different batches and models of products, the specific number and value of the series resistance depends on the operating current, the above parameters are for reference only. The current of each branch of the LED should be adjusted to 19ma±1ma, and the resistor should be 1k/2w, such as 5k, you can use 5 resistors with a resistance value of 1k ohm and a power of 2W to connect the resistors in series.

5, connect the controller: the positive pole of each string of LEDs into the positive (red line) end of the controller, the negative pole of each group of light-emitting diodes into the negative (green line) control terminal of the controller. The three yellow lines are the output lines of the running side lights, respectively, connected to the negative pole of the three groups of side lights. The three positive poles of the side lights are welded together with the positive pole of the main character. General controller has a straight light output line, in the absence of constant light requirements, light box constant light output line should be cut or glued with a glue stick to prevent damage to the controller with the positive pole break.

6, debugging: connection is correct, the power will light up, a simple way to measure the current, using a multimeter DC voltage gear, measuring one of the 1K/2W resistor on the voltage of about 15-20V (preferably less than 18V), beyond 20V and then add a resistor to measure again until normal. In order to facilitate the debugging measurements, the controller can be set in the debugging state and long delay interval state, the controller output at this time for a large proportion of long light, short extinction state. Now the controller has a straight bright output, the current is constant in favor of accurate measurement of the voltage of the resistor.

7, maintenance: if not bright, with a multimeter DC 250V file, the black pen connected to the green line, the red pen connected to the red line, if the indication of jumping or in the 200-220V, indicating that the controller is normal; the black pen does not move, the red pen in turn to measure the voltage at each end of each led, if the voltage difference between the two feet of a LED is very large or no voltage, indicating that the LED is damaged, replace it and then try again.

8, the assembly of the light box: I introduced a cheap and inexpensive way to use aluminum extrusion is certainly beautiful, but the cost is high I did not use. Materials: 2 *.mm wood keel and 2.*mm aluminum angle (90 °), these materials are generally decorative materials market. Specific production methods do not need to go into detail,

9, the idea of matters: often new entrants to the customer asked why the green and blue lights are very easy to break, in fact, most of the reasons are not the quality of the lights have a problem, but the novice welding technology has not been fully grasped, the welding does not go well, the time is too long and cause damage to the LED lights, which will need to improve the welding technology and speed to avoid it.