A current generator includes an op-amp having a negative terminal arranged to be coupled to an input voltage, a resistance selection circuit having at least one tunable resistor connected with each other, and at least one power transistor. The static-reducing device includes conductive threading woven into the seat cushion or into piping along the seat cushion seams, conductive wiring connected to the base to form a conductive path for dissipating the electrostatic charge, or a humidity-absorbing layer. The relative off-set between independently generated local oscillator signals forms the basis of the off-set phase required for a phased array. A fuel amount to be supplied to the engine is calculated according to the valve opening amount of the exhaust gas recirculation control valve. Thus, efficient, convenient, and high-quality paper feeding may be possible. The tape measure has a housing, a coiled measuring tape, a tape tip, and a marker having a marking wheel mounted on an axle.