motor speed controller for kids' electric car

Michael · 2009-08-31T18:43:00+00:00

I've got an electric car for the kids that has only an On-Off switchfor speed control. I was hoping to add a better speed controller thanthat. I would need to PWM 12V, about 10-15A. I was hoping to use a555 to generate the pulses to the mosfet gates.I saw this:I can appreciate the beefy freewheel diode and mosfets, but would Ireally need a FET driver? At what point do I need a FET driver?Would the output from a 555 suffice?Thanks,Michael

Aug 31, 2009 60 Replies

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gearhead 16 years ago

Yes, I meant 100 ns (nanoseconds).

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motor speed controller for kids' electric car

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