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See the example below. The pin-out for the is shown below, and the datasheet is available at here.

What you need to do is select the appriate size resistor which will ensure you still have decent current goiing through the LED without burning it out. This connection is available on pins 3 and 8.

Every LED has a maximum forward current and forward voltage. We are factory specialized in making LED 7-segment display, dot-matrix display, light bar display and abnormity digital display. In this example I will be using 2 x and 2 x 7 segment module. Since this is being powered by a 9V battery, I am using 1. Now controlling a 7 segment display like this is OK, but we can do much better.

  ICEA S-95-658 PDF

Once you do this the number will be updated on the 2 LED modules. This calculator will help you figure out the resistor size http: Already have an account? This provides a little over 5ma for each segment. Next article Severed hand in a jar Halloween display.

bd datasheet & applicatoin notes – Datasheet Archive

First we need to familiarize ourselves with the 7 segment module. The photo below shows the finished circuit. The modules we will be using have a common cathode.

Hacking the power buses The power Your email address will not be published. Remember Me Lost your password? Each IC takes a binary number as an input, then outputs the necessary lines to display that number on the 7 segment display.

Driving a 7 segment display with a 4511 BCD to 7 Segment Driver

For normal operation, Latch Enable LE is held high, but when it is grounded, the takes the 4 line input and updates its internal registers. Now we will build a very simple 4511vd to drive a single digit.

Using the 7 segments, you can make any decimal digit. The segments are then displayed on the basis of those internal registers. We will use a DIP switch to turn various segments on and off. Your shopping bag is empty. A few hacks to make bread boarding easier Go to the shop.


I used the LED resistor calculator on ohmslawcalculator. This is just for information. Those are symbol for LED, to represent the 7-segment display, not normal diodes. Im trying to drive a single 7 segment display but i dont 4511hd how. This means that the negative side of all the LEDs are connected together. Leave a reply Click here to cancel the reply Your email address will not be published. If the voltage is too high or the resistor too low think of the wire being a resistorthe current going through the LED will exceed the maximum forward current and burn out the LED.

Each segment is identified by a letter as can be seen below as well as the pinout and schematic for reference.