I have a circuit in which a L239D motor driver drives a pair of simple DC motors. The motor driver can only supply 600mA on each output, and I have a voltage of 3.3v coming from the motor driver. How do I limit the current so it doesn't fry the chip?
I know a resistor would be the solution: I have tried to use an Ohm's law calculator to find the required resistance, and it told me I would need 5.5 ohms. I rounded this to 5.6 ohms, as this is a standard size. It also tells me that this is a 2W circuit...
Does this mean I need a 2W+ resistor at 5.6 ohms? I thought this was strange, as the only resistors that I can get my hands on are 0.25W, and I need to go to specialist companies to get the type I need. Please confirm this is right, as I can't afford to waste any money on this build!
I know a resistor would be the solution: I have tried to use an Ohm's law calculator to find the required resistance, and it told me I would need 5.5 ohms. I rounded this to 5.6 ohms, as this is a standard size. It also tells me that this is a 2W circuit...
Does this mean I need a 2W+ resistor at 5.6 ohms? I thought this was strange, as the only resistors that I can get my hands on are 0.25W, and I need to go to specialist companies to get the type I need. Please confirm this is right, as I can't afford to waste any money on this build!
