I have an idea of creating a train horn like device with a variable pitch. I need a variable force that acts on the membrane of the horn. I have the idea of the construction ready. In short, a ring pushes the membrane with a variable force. My question is, can a solenoid be used here? I'd drive the solenoid with a power transistor and PWM. The function of the solenoid would not be to move the whole throw. It would move only a fraction, while the membrane would act as a counter force.
I'd drive the solenoid with a power transistor and PWM.