​what is a multidigit LED digital tube?

Last Update Time: 2018-10-29 15:17:58

what is a multidigit LED digital tube?

A number of LED digital tube is developed on the basis of an LED digital tube.The number of digital characters will be packaged together to become a number of digital control, internal packaging of a few digital characters of the digital tube is called "X" digital tube ( X value ) is equal to the number of digital characters.The commonly used digital tube is 1 to 6,and the same as an LED digital tube,it is also formed by the light emitting diode connected in a fixed way,it can be divided into two types:common cathode type and common anode type.The luminous color is also red, green,yellow,orange and so on.The outstanding characteristics of the LED digital tube are that it is easy to be installed,the external connection is simple,and the display function is better than that of a digital tube,and the power consumption is low,and the cost is low.It is widely used in new digital instruments,digital clock and other circuits as display devices.

How to measure the number of LED digital tube? 

The basic method for the detection of multi-digit LED digital tube is the same as the detection of an LED digital tube.It is also used to directly use the multimeter RX10k2 block ( can use two batteries in series after a few hundred ohm resistance ) measurement method to judge.

Test pin arrangement order structure type.

Discriminates structure type.Figure shows a schematic diagram of the structure of a multi-digit LED digital tube note:this diagram is to determine whether the digital tube is a common cathode structure,if it is judged whether the digital tube is a common anode structure,the red and black stylus can be adjusted.The red stylus is connected to a pin,and the other pins are contacted in turn with a black stylus pen,and seven pen segments can emit light successively on the same one,it shows that the measured digital tube is a common cathode structure,and the red pen is connected with the common cathode of the digital tube.If the black pen is connected to a certain-pin,with the red pen to touch other pins,can detect the same digital tube has seven pen section,it shows that the digital tube under test belongs to the common anode structure,and at this time the black pen is connected with the public anode of the digital tube.

Determine the position of the tube.The above method is used to determine the common electrodes of ten,100,and so on.You can draw a digital tube's internal wiring diagram and pin arrangement diagram according to a digital tube method.

Detection of the luminous properties of the whole pen

According to the above,the structure of the LED digital tube and the arrangement of the pins are detected,and the luminous performance of each segment of the digital tube is checked.Taking the common cathode as an example,the negative electrode is connected to the digital common cathode with a single 1kilo-ohm resistor in two batteries.Word. Careful observation,the luminescence color should be uniform,no pen segment is incomplete and partial discoloration.