Dosage forms and drug delivery devices suitable for administration of pharmaceutical compounds and compositions, including the oral drug administration of compounds. The current sensor detects a current value during charge and discharge of the secondary battery. For velocities outside the first range, a periodic control signal based on a periodic second signal generated by a second sensor and a mapping between the first and second periodic signal are used. A supply unit for the dual dispenser including a receptacle, a supply of soap within the receptacle, and a supply of air freshener connected to or secured within the receptacle. Both incoherent and coherent light sources may be used with the present invention. The telescoping tubes can be used to change the degree of deflection of the perforating guide wire by changing the relative positions of the offset exit ports.