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Infrared light has a difference with ordinary light in general. We can see clearly when a light or light on an object. As with the infrared light we can not see the manifestation of these rays. Frankly I can not answer when asked why the infrared rays are not visible in the eyes of us. So at night do not hope you can make light by using infrared light. One thing that is often heard from many people that infrared light can utilized for the functions of a camera that can see in dark conditions is often called an infrared camera. Actually I have explained the working principles of electronic circuit section in this blog is about the basic working principle of a series of infrared sensors are simple. To design this sensor circuit you should not find trouble if you ever make another series of sensors. It's just that the sensor circuit consists of the transmitter and receiver, to learn the basic principles of this series of infrared you can see in the Basic Principles Series Infrared Tra...

  Seven Segment display is the most common and fundamental display device which is used in many Electronic Gadgets and Appliances like Electric stove,Microwave Owen,Digital Clocks and also in many Digital Meters like Multimeter. The seven segment display is called so since it contains 7 segments of LED which is assembled in a structure resembling like numeral ‘8’.This is because you can form all 10 digits (0-9) from the pattern ‘8’. Actually 7 segment display consists on 8 segments,In which apart from seven segments mentioned above there is an extra segment to display dot,Which can be useful while displaying non integer number.   The 7 segments are named as A-G and the optional eighth segment is named as H.As you can see in the diagram the seven segment are arranged to form a shape of ‘8’.If all the segments are given the power then the number ‘8’ will be displayed and if you cutoff the power for segment G then it will result in number ‘0’.Similarly you can form the combinat...

A digital dice circuit can be easily realised using an astable oscillator circuit followed by a counter, display driver and a display. Here we have used a timer NE555 as an astable oscillator with a frequency of about 100 Hz. Decade counter IC CD4026 or CD4033 (which-ever available) can be used as counter-cum-display driver. When using CD4026, pin 14 (cascading output) is to be left unused (open), but in case of CD4033, pin 14 serves as lamp test pin and the same is to be grounded. Circuit diagram :   Digital Dice With 7-Segment Display Circuit diagram The circuit uses only a handful of components. Its power consumption is also quite low because of use of CMOS ICs, and hence it is well suited for battery operation. In this circuit two tactile switches S1 and S2 have been pro-vided. While switch S2 is used for initial resetting of the display to ‘0,’ depression of S1 simulates throwing of the dice by a player. When battery is connected to the circuit, the counter and display secti...