How do PWM signals work?

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Tags

1. #works
2. #amount
3. #typically
4. #flows
5. #control
6. #signal
7. #pulsating
8. #cycle
9. #below
10. #square
11. #stays
12. #pulse
13. #illustration
14. #device
15. #signals
16. #waves
17. #current
18. #varying