It is an objective of the present invention to provide a pressure transducer assembly for measuring pressures in high temperature environments that employs an elongated tube which is terminated at one end by an acoustic micro-filter. By staggering the DVDsCDs on a Spiral Rack, the invention makes each DVDCD visible and easy to identify. After the coils are wound, an unwinding force is applied to the outer coil and the inner coil is inserted into the outer coil to have its winding inclined opposite to that of the outer coil; and thence, the outer coil is allowed to contract to form an interference fit with the inner coil. The rectifying circuit is configured to bypass a starter route and also direct the power signal to the driving circuit through a power input route. The bridge has only one support structure, with the drive, located on one side of the passage to be spanned.