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With BC547 I get 5.7v and with BD139 I get 6.1v (this I tested with ciruit simulator being that I dont have it with me and if that is the problem I will have to go buy it) even though power supply is 9v and powers the motor well.Thank you for your quick reply
I am currently trying to make but its not working because the current comming out of the transistor is not enough to drive the motor although the battery itself when connected to the motor works fine.Thanks for your help in advanced
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