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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 451bd. This provides a little over 5ma for each segment.

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

Leave a reply Click here to cancel the reply Your fatasheet address will not be published. Once you do this the number will be updated on the 2 LED modules.

Now controlling a 7 segment display like this is OK, but we can do much better.

Next article Severed hand in a jar Halloween display. Go to the shop. Already have an account? The modules we will be using have a common cathode.


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.

Your shopping bag is empty. We will use a DIP switch to turn various segments on and off. The pin-out for the is shown below, and the datasheet datashedt available at here. This datashewt just for information.

Since this is being powered by a 9V battery, I am using 1. We are factory specialized in making LED 7-segment display, dot-matrix display, light bar display and abnormity digital display. The photo below shows the finished circuit. This connection is available on pins 3 and 8.

Im trying to drive a single 7 segment display but i dont know how. Using the 7 segments, you can make any decimal digit. Every LED has a maximum forward current and forward voltage.

BD Datasheet catalog

Your email address will not be published. Hacking the power buses The power Each IC takes a binary number as an input, then outputs the necessary lines to display that number on the 7 segment display. This calculator will help you figure out the resistor size http: Those are symbol for LED, to represent the 7-segment display, not normal datasheft. Remember Me Lost your password? I used the LED resistor calculator on ohmslawcalculator. First we need to familiarize ourselves with the 7 segment module.


Результаты поиска для 4511BD

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

This means that the negative side of all the LEDs are connected together. Now we will build a very simple circuit to drive a single digit. A few hacks to make bread boarding easier The segments are then displayed on the basis of those internal registers. 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.

In this example I will be using 2 x and 2 x 7 segment module.