motor speed controller for kids' electric car

[gearhead]

On Sep 10, 2:04 pm, Michael <mrdarr...@gmail.com> wrote:

On Sep 9, 5:11 pm, gearhead <nos...@billburg.com> wrote:

If you look at the datasheet for the BUZ11, it has a gate capacitance
of 2000pF, equal to 2nF or 2 * 10^-9.
Now you can calculate the timing constant defined by the gate
resistor.  To make the arithmetic easy, call it 50 ohms.  Multiply R
times C and you get 10^-7, or 100 microseconds.  

0.1 microseconds, you mean?

Yes, I meant 100 ns (nanoseconds).