Hello there,

I want to design an H-Bridge for my application.
I learnt that I need two transistors of each type NPN and PNP to make a H-bridge in the simplest way.

here are the power transistors I am going to use

The PNP one

http://www.nex-robotics.com/product...fets/tip127-100v-5a-pnp-power-transistor.html

and the NPN

http://www.nex-robotics.com/products/electronic-components/tip122-100v-5a-npn-power-transistor.html


so my question is are those two type of transistors ideal to make a working H bridge.

What is the required voltage to drive the transistor on and off, can you drive them directly using the output from the I/O pin of an AVR (TTL) ?
It would be best if someone can refer a link related to it

 

What is your H-bridge for? Attached is a H-bridge circuit for driving a piezo. Transistors used are 2N3906 and 2N3904.

 

Motors I intend to run motors with 5Amp each so I would use four mosfet for each half bridge to make current go parallel in two routes instead of whole 5 amp through just one mosfet vaporizing it

 

Motors I intend to run motors with 5Amp each so I would use four mosfet for each half bridge to make current go parallel in two routes instead of whole 5 amp through just one mosfet vaporizing it

A motor has a much higher starting or stall current than the running current. The mosfets should be sized to handle that current.

What voltage is the motor?

 

12v DC i'll power them through a NiCd Battery pack (1.2volt x10 cells)

 

Hi,
You can buy Hercules DC Motor driver board from nex. I purchased it and working with it.