A wideband delay-locked loop circuit includes an internal clock signal generating unit providing an internal control signal by selecting and interpolating between two clock delay signals during a primary phase locking operation. The apparatus allows the boom tip to assume a neutral position and to pivot forward and rearward. In one embodiment, the cantilever arm can be shaped to tune the fundamental resonance frequency. In this condition, the inductive properties of the receiver coil are minimized during abrupt transmitter coil turn off. The semiconductor device includes semiconductor regions formed on the bottom surface of the mesas of the first semiconductor layer. The tangential striking mechanism has an anvil associated with the drive shaft and a hammer associated with the drive, movable with respect to each other so as to strike each other axially when under the effect of the force of at least one first spring, and to strike each other tangentially when the anvil and the hammer are rotated.