As peribronchial cuffing is a sign rather than a symptom or condition, there is no specific treatment except to treat the underlying cause.
Explain how a potential divider circuit can be used to produce a variable p.d. A potential divider is a circuit with at least two components (Câ, Câ)connected in series, with the output voltage taken across one of the components (Câ).
This is what PWM means when referring to DC motors. The Handy Boards DC motor power drive circuits simply switch on and off, and the motor runs more slowly because its only receiving power for 25%, 50%, or some other fractional percentage of the time. A servo motor is an entirely different story.