Abstract: To eliminate the temperature dependency of the quiescent current of a power transistor (1), the gate bias voltage of the power transistor (1) is controlled by means of the output voltage of a biasing transistor (3) residing on the same silicon chip as the power transistor (1), and by interconnecting the gate (G3) and drain (D3) of the biasing transistor (3) and feeding it with a constant current (IB) from external circuitry.

Abstract: A stereotactic apparatus including a support slide for being slidably mounted to an arc, a microdrive unit having an instrument holder for depth adjustment of an instrument along a depth axis, in an essentially arc parallel plane, an arc perpendicular adjusting mechanism for adjustment of the microdrive unit along an arc perpendicular axis, an arc parallel adjusting mechanism for adjustment of the microdrive unit along an arc parallel axis, wherein the arc perpendicular adjusting mechanism includes an arc perpendicular slide, which is movably mounted to the support slide. The arc parallel adjusting mechanism is mounted at an end of the arc perpendicular slide, so that by movement of the arc perpendicular slide in a direction along the arc perpendicular axis the arc parallel adjusting mechanism also moves in that direction.

Abstract: The disclosure relates to a method of initiating a crystal growth prior to filtering off, from the mother liquor in which they were produced, of such crystalline explosives of the type hexogen and octogen produced by the so-called Bachmann process or variations of this process.According to the invention, the mother liquor is, after the end of the chemical reaction proper, subjected to a pressure-heat treatment which initiates the partial dissolution of the crystalline explosives obtained in the process, giving rise, after cooling of the mother liquor, to larger crystals which may more readily be filtered off.According to a further improvement of the invention a relatively pure octogen may be extracted from the mother liquor by way of a thermo-filtering of said liquor at a temperature of 60.degree.-110.degree. C.

Abstract: The disclosure primarily relates to a method of phlegmatizing crystalline or otherwise particulate explosive substances or compositions in which these are included, by first coating the discrete particles with a thin layer of oxazolin wax in order thereafter to carry out a conventional wet-granulation with a true phlegmatization agent or a binder agent, such as one of the wax types included under different explosive standards or a plastic composition. The invention also concerns products manufactured according to said method.