Abstract: An apparatus includes a first transistor having a control input and a second transistor having a control input. A first driver has an input. A first output of the first driver couples to the first transistor's control input. A second output of the first driver couples to the second transistor's control input. A third transistor has a control input. A fourth transistor has a control input and couples to the third transistor. A second driver has an input, a first output that couples to the control input of the third transistor, and second output that couples to the control input of the fourth transistor. An adjustable delay circuit has first, second, and third inputs and an output. The first input of the adjustable delay circuit couples to the input of the first driver. The output of the adjustable delay circuit couples to the input of the second driver.

Abstract: Fluidized-bed opposed jet mills, configured as separator mills, and provided with easy accessibility so that the interior space can be easily cleaned with little effort. The separator wheel is formed together with the bearing unit and the actuator unit as one component, which is detachably attached to the grinding container and can be moved relative to the grinding container by kinematic devices in such a manner that the separator wheel can be removed from the grinding container upward through the discharge outlet for finely ground material, while the discharge device for the finely ground material remains connected to the grinding container. In this manner, the separator mill can be easily assembled and disassembled by the user and the separator mill becomes easily accessible for thorough cleaning. This is particularly advantageous when the material to be ground is changed frequently, as is the case in the pharmaceutical and chemical fields.

Abstract: Fluidized-bed opposed jet mills, configured as separator mills, and provided with easy accessibility so that the interior space can be easily cleaned with little effort. The separator wheel is formed together with the bearing unit and the actuator unit as one component, which is detachably attached to the grinding container and can be moved relative to the grinding container by kinematic devices in such a manner that the separator wheel can be removed from the grinding container upward through the discharge outlet for finely ground material, while the discharge device for the finely ground material remains connected to the grinding container. In this manner, the separator mill can be easily assembled and disassembled by the user and the separator mill becomes easily accessible for thorough cleaning. This is particularly advantageous when the material to be ground is changed frequently, as is the case in the pharmaceutical and chemical fields.