training/explanation-what-is-pwm.md

@@ -50,7 +50,7 @@ portion, with the final low portion filling in the rest.
 ## Average Voltage
 
 Consider the scenario when there is a 100% duty cycle. That is simply a constant
-voltage (it is just an electrical signal transferring over a wire). So the
+voltage. So the
 average voltage to be the duty cycle multiplied by the aforementioned constant
 voltage. For example, if a 100% duty cycle is 5 V, then a 30% duty cycle would
 be 1.5 V (30% of 5).