DC Motor Direction Control Using H-Bridge

367

07:51:26

There are four switches. If you close  two switches of any side it will short circuit your battery but if you close any two switches through corner it will rotate motor any particular direction.

published 4 years ago

wyoelk

4 years ago

Do a search for h bridge or maybe even h-bridge to see complete control circuits

ShuvangkarShuvo

4 years ago

If you look for a complete control circuit, look into my github. guthub/shuvangkar. You will find a sine wave inverter project

Robert_Kidd

4 years ago

The shorting problem arises because EC components are ‘perfect’. That is, the supply output impedance is zero and coils (including transformer windings) and switches have zero contact resistance. This can result in simulator calculations where the result is infinity causing the error message to be displayed. A workaround for this is to place very small value resistors in the circuit in series with such components which can be in parallel when switches are operated.

Robert_Kidd

4 years ago

In the circuit shown here, for example, a 1 milliOhm resistor in series with each of the to switches will prevent the error message. You will, of course, get very high currents when the upper and lower switches are both on, a condition which you would design out in a real circuit.

Robert_Kidd

4 years ago

As you will realise not every ‘perfect’ component in a given circuit need have a resistive element providing each potential short circuit path has one. So, if you add the two mentioned above the supply does not need to have a resistor to represent it’s output resistance. Hope this helps someone.

Robert_Kidd

4 years ago

Correction, it should have said ‘ …..a 1 milliOhm resistor in series with each of the top switches ….’

Robert_Kidd

4 years ago

Final note: there doesn’t have to be a supply involved. Just putting two switches in parallel, or coils etc. will cause the error message.

lensrulz

4 years ago

http://everycircuit.com/circuit/4986903792975872

add comment in editor

EveryCircuit is an easy to use, highly interactive circuit simulator and schematic capture tool. Real-time circuit simulation, interactivity, and dynamic visualization make it a must have application for professionals and academia. EveryCircuit user community has collaboratively created the largest searchable library of circuit designs. EveryCircuit app runs online in popular browsers and on mobile phones and tablets, enabling you to capture design ideas and learn electronics on the go.