@@ -64,5 +64,20 @@ Choosing a stepper very much depends on the type of machine you have or are goin
- For the same reason, bipolar motors have a high torque output. To learn more about the wiring, check this [Wiring Configurataion](https://blog.orientalmotor.com/wiring-basics-unipolar-vs-bipolar).
- However, the motors need more complex circuitry to switch the coils. This isn’t an issue because the driver modules do this for us.
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>#### 2) Torque Rating
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-Stepper motors are rated by their holding torque in oz / in (ounces per inch) or N.m (Newton-metre) etc.
-Holding torque is the maximum torque that the motor can provide with both windings energized at full current before it starts jumping steps.
-**Example**:a NEMA23 might say 175 oz / in. So it can hold 175 ounces on an arm of 1 inch in length attached to the motor shaft.
-We also need to note how much current the motor will draw and the voltage it needs to work at.
-The holding torque with one winding energized at the rated current is about ***1/sqrt(2)*** times that.
-The torque is proportional to current (except at very low currents), so for example, if we set the drivers to 85% of the motor rated current, then the maximum torque will be ***85% * 0.707 = 60%*** of the specified holding torque.
