Present invention relates to an oscillator circuit comprising: resonator means and, first and second emitter followers being symmetrically coupled to the resonator means and been connected to further emitter followers for providing capacitive loading. The at least one second depletion-forming layer is electrically connected to the source electrode. A needle is pivotably mounted at one end to the driver member to extend, when the driver member is moved forward, through a slot in the fixed member and an opening in the shaft, and to retract back into the shaft when the driver member is moved backward. At least one of the first arm and the second arm is slidably coupled to the shaft and is configured to move along the shaft in a direction that is substantially parallel to the shaft axis of symmetry. This location information is then used to access the desired resource.