Abstract: The present invention relates to an improved controllable valve, in particular for an inhalation device, which, e.g., comprises a container for a predetermined aerosol volume, a means for disbursing an aerosol from an aerosol dispenser into the container and a control means that keeps the inhalation flow essentially constant during the entire inhalation. The control means comprises an either continuously or gradually controllable valve so as to limit the flow rate.

Abstract: A method for monitoring and controlling a plurality of series-connected capacitance, wherein at least during the discharge of the capacitances, there is determined a voltage of every capacitance, and in the instance of a drop-off of a voltage of one of the capacitances below a first threshold voltage of this capacitance, the capacitance is bridged over to at least the end of the discharge. Also provided are devices for determining every voltage of every capacitance, devices for symmetrizing voltages among the capacitances, and devices for the deactivation of at least one of the capacitances.

Abstract: The invention relates to a component for an inhalation device comprising a first flow channel for inhalation, a second flow channel for exhalation, a mouthpiece forming a part of the first flow channel, a filter assigned to the second flow channel and a protection element which circumferentially surrounds the mouthpiece and is sealingly connected the mouthpiece at the end opposing the tip of the mouthpiece.