TECHNOLOGY FOCUS - ELECTRICAL POWER AND ENERGY - Preferred Component: The vibrating assembly further includes an elastic support for the vortex shedding device. The elastic support biases the vortex shedding device toward a neutral position against lift forces produced by the vortices. The vortices produce alternating lift forces on the vibrating assembly, thus causing the vibrating assembly to vibrate. The generator includes an electromagnetically active material in which strain is induced in response to the vibration of the vibrating assembly; coil(s); and magnet(s) that is displaced relative to the coil in response to the vibration of the vibrating assembly. A motion of the vibrating assembly is transmitted to the electromagnetically active material via a leveraging mechanism that decreases amplitude of the motion. The leveraging mechanism elastically supports the vortex shedding device, thus influencing the resonant frequency of the vibrating assembly. The electrical power generating system (18) further comprises a rigid arm connecting the vortex shedding device to the generator; and a tubular string (14) having a flow passage. The elastic support supports the arm between the vortex shedding device and the generator. The vortex shedding device is positioned in a recess internally formed in the tubular string. The recess is laterally offset from the flow passage and in fluid communication with the flow passage. The electromagnetically active material of the generator is attached to a beam of the vibrating assembly, so that a strain in the beam is transmitted to the material and electricity is produced in response to the strain in the material. The vibrating assembly and the generator are positioned in a wellbore of a well. The generator can be an electrical power generator that generates the electrical power in response to displacement of the arm. The arm vibrates at the resonant frequency in response to the alternating lift forces. A frequency of the vortices shed by the vortex shedding device is equal to the resonant frequency. The leveraging mechanism includes an integrally formed lever device having flexure pivots. The leveraging mechanism and the electromagnetically active material form portions of the elastic support. The relative displacement between the coil and the magnet produces electricity in response to the vibration of the arm. The generator has at least two of the magnets and at least two of the coils. One of the magnets and one of the coils are positioned on each of opposite lateral sides of the arm. The recess is in fluid communication with the flow passage. The electrical power generating system also includes a flow diverter positioned in the recess; and a biasing device that biases the vane to restrict the flow through the passage, thus diverting the flow toward the recess. The flow diverter increases a velocity of fluid impinging on the vortex shedding device in the recess. It causes fluid flowing through the recess to impinge on the vortex shedding device at an angle relative to a longitudinal axis of the passage, where the angle is greater than 0degrees (preferably approximately 20- approximately 60degrees). The flow passage is formed through the tubular string. The tubular string is positioned in the wellbore. The flow diverter influences fluid in the passage to flow toward the recess. It includes projection(s) extending into the passage opposite the recess, and vane(s) positioned in the passage. The vane is rotatably mounted relative to the passage. The arm is rigid, and more rigid than the elastic support. The elastic support supports the arm between the vortex shedding device and the generator. The vortex shedding device is positioned in a channel laterally offset from the flow passage extending through the generating system. The channel has opposite ends each of which is in fluid communication with the flow passage. It is isolated from the flow passage between the opposite ends of the channel. The flow diverter is positioned in the channel. It increases the velocity of fluid impinging on the vortex shedding device in the channel. It causes fluid flowing through the channel to impinge on the vortex shedding device at the angle relative to a longitudinal axis of the passage, where the angle is greater than 0degrees (preferably approximately 20- approximately 60degrees). The vortices impinge on surface area(s) attached to the arm to produce the alternating lift forces. The surface area is formed on the vortex shedding device downstream of a portion of the vortex shedding device at which the vortices are shed. The generator may include at least first and second magnets that displace in opposite directions relative to respective first and second coils in response to the displacement of the arm. The first magnet displaces in a first direction relative to the first coil. The second magnet displaces in a second direction relative to the second coil when the arm displaces. The first direction is opposite to the second direction. The well is a subterranean well (10). The electrical power generating system is positioned in the wellbore.