Simple H-Bridge concept

Ever had the need to change the polarity of a power source and had no idea where to start? Well this simple h-bridge will give you a starting stone to work with. This can be used for motor direction control, bi colour LED's or anything involving the direction in which current flows.



The concept is simple. Use an array of transistors for switching and re-routing the direction in which the current flows.

A picture of this concept is shown below:



Keep in mind that this is a concept and in order for it to work resistors and/or any protection circuits have to be added. Remember that motors give emf and can cause the transistors to burn up. Some people use darlington pairs and relays to trigger a higher voltage (for the motor in this case).

Hope this entry has been of use!