while i was giving a supply of 1.3 A and 12v ,short circuit happened.so what is the maximum capacity of IC L239D ??

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L293D is for small motors or inverters.

If you want it to handle a 1.3 amp load you can use it as a transistor driver for higher loads.

However if you are going to do that you might as well build your own full bridge or half bridge circuits.

manjusulagna154 (author)  Josehf Murchison10 months ago

can we use The IC L298n for this purpose ??

Yes L298 series IC should be able to to handle your load with ease.

manjusulagna154 (author)  Josehf Murchison10 months ago

Thanks a lot..

manjusulagna154 (author)  manjusulagna15410 months ago

Will you tell me the connection of L298n IC with Arduino ??

For 1 motor

It is the same sketch as L293 in this Instructable.


You can get the datasheet for the IC here:


Current sensor pin 1 R 0.5 ohm

+ up to 50 volts motor supply pin 4

+ 5 volts logic pin 9

Ground pin 8

The motor to pin 2 and 3

Enable pin 6

Data inputs pin 5 and 7

Second motor

The motor to pin 13 and 14

Enable pin 11

Data inputs pin 10 and 12

Current sensor pin 15 R 0.5 ohm

Standard 2 motor sketch for the L293

manjusulagna154 (author)  Josehf Murchison10 months ago

Thanks a lot sir..

Your welcome.

rickharris10 months ago

L293D has an over current limit of 600 Ma per output channel. It will clamp down when tyhat limit is exceeded, a situation that often catches people out and they put too large a load on the H bridge and think it isn't working.