9000 Aero L4-2290cc 2.3L DOHC Turbo EFI (1996)
If we have a pulse length of 0.9 ms at 100 Hz, it is said that the pulse ratio is 9% (the duration of the pulse is 0.9 ms out of a possible 10 ms).
When information is being transmitted, the pulse ratio is between 8% and 92%.
Pulse Width Modulation Signal
When The PWM Signal Is Not To Be Regarded As A Signal
The PWM technique can also be used for purposes other than transferring information between control modules. PWM can be applied directly to a
consumer (item of electrical equipment) in the system, in which case we do not refer to it as a PWM signal because it is not information as such
that is transmitted.
One example is the instrument lighting which is supplied with PWM voltage, where a low pulse ratio causes the lamps to shine dimly while a
higher pulse ratio increases their brightness. Since the frequency is high, the eye cannot perceive that the lamps are "flashing".
