Abstract: A motor drive circuit, in which a first transistor at a drive stage, a second transistor at an output stage to be driven by the first transistor and a third transistor downstream the output stage for a short braking operation are formed in a common substrate or a common well of the substrate, a region of either a P type or an N type in either the substrate or the well is connected with the first transistor via a conductor so that a parasitic transistor is formed in which the substrate or the well serves as its base, whereby a current flowing from the first transistor to the second transistor during the short braking operation is sinked by turning on the parasitic transistor.

Abstract: A pressure regulator includes a hermetically sealed housing that limits the potential for leak paths to atmosphere or exterior to the housing. The regulator includes a dampening arrangement for limiting oscillations during high flow rates. A stem clip secures a poppet assembly to a movable member of the regulator. The stem clip permits radial movement of the poppet assembly to facilitate centering of the poppet assembly relative to a valve seat. The poppet assembly includes a self-tapping poppet to precisely set the opening between the poppet and valve seat irrespective of tolerance stackup.

Abstract: A stain discriminating apparatus in which light rays having at least light component having a wavelength in a predetermined range are projected to a cell sample to discriminate the staining method by which the cell sample has been stained on the basis of the light intensity of the light component transmitted through the sample and having the wavelength (530 nm) in the predetermined range. An automatic cell sample classifying apparatus in which a plurality of cell sample slides are sequentially fed to the stain discriminating apparatus is used to determine the staining method by which the cell samples have been stained, respectively. One of the examination/classification programs previously stored in a memory is read out according to the staining method as discriminated and the cell samples are processed in accordance with the program as read out.