![]() You can use any general-purpose NPN transistor. so I used a BC548c transistor for mine (previously I used a 2SC828). We are going to control these 4 switches via our computer parallel port.Ī transistor can act as a switch, which means theoretically a small current flowing to the base controls the larger collector's current. I have marked the important components for us. Inside of your toy car remote controller Inside the car (we don't need to do anything here I have just dispatched it).
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