# convert common anode to common cathode and otherwise

## common anode to common cathode converter and otherwise

How to make common anode to common cathode converter and otherwise?. In this article admin will discussing about it.  In previous articles admin have discussed about common anode and cathode if you has not read it please read on article what is common anode and common cathode and how does it work?

as explained in the previous post the common anode is a series of LEDs arranged by means of anode being made into one (common anode) while the common cathode is the inverse of common anode

in a common cathode series of LEDs arranged by combining the LED cathode leg into one (cathode joint). You can read it in previous post

In this article admin will share how to convert common anode to common cathode and otherwise that can also be used to convert common cathode to common anode

## how to convert common anode to common cathode and otherwise

To turn on a common anode LED it takes logic 0 to turn it on and whereas LEDs are arranged in common cathode it takes logic 1 to turn it on

So the problem is what if you has a row of LEDs are arranged in common anode and you want to turn it using logic 1

or vice versa if you has a row of LEDs are arranged in common cathode and you intends to turn it on by using logic 0

Can it be done?

Look at the picture bellow

To more easily you can look at the following picture

the three LEDs in the above picture are arranged in common anode. If the switch on the picture above is pressed then clearly the LED will not turn on

It happens because turning it on takes logic 0

## how to turn on LED common anode with logic 1

one way to turn on the LED like the picture above is to install the logic gate notes

not gate is an inverting logic gate or Inverter. For an article about gate not you can read it on article what is not gate and how does it work

By using the not gate you can change or convert common anode to common cathode and vice versa that can also be used to convert common cathode to common anode

## common anode to common cathode converter using not gate

The schematic of common anode to common cathode converter is as follows

an example of a CMOS type IC that you can use as gate notes is IC 4069. You can read it on TTL and CMOS logic gate types

By using a circuit like the image above you can convert common anode to common cathode

One of the benefits of the above is to apply you one of them is on the seven segment