lucrus91:
With this circuit how much can I get ? Because actually think they are a problem, in my coil I have 0.5 V exactly like the tension of the arduino on the base pin of each transistor but I doesn't have load or less than 50mA.... It not works with little diodes...
By saying that, I would like to say that it is strange thats actually I have less than 0.5 V at the pin of the coil, no ? On internet some have around 3 V with this circuit.