Abstract: A voltage level shifting circuit having a minimum number of transistors with a single device delay is provided. Regular P and N-channel field effect transistors are used with means for increasing the threshold voltage of the input N-channel transistor. A clamping transistor is used to clamp the input node at a high voltage when the output is at a low voltage. The circuit is small in size, fast in operation, and low in power consumption.

Abstract: An electro-magnetically controllable beam deflection device for use in an optical system for deflecting a radiation beam obtained from a radiation source, in particular for use in video players. The deflection means may for example comprise a pivoting mirror, or an assembly of a plano-concave and a plano-convex lens which with their concave and convex surfaces face each other, and can perform pivoting movements at a small distance from each other. The deflection means is connected to frame by means of an integrated plastic bearing component. The bearing component has a local portion of small cross-section which under the influence of the control forces exerted on the deflection means, is relatively readily deformable. This portion may for example take the form of an integral hinge or of a thin cylindrical portion.

Abstract: A changer pin for a record changer suitable for completely independently supporting a number of gramophone records with a small central opening, which are stacked on the changer pin, above the turntable, and for changing said records. The pin comprises a control slide which controls the coordinated movements of an integral unit forming three record supports, another integral unit forming three record lifters and a third unit forming three record hold-down devices for holding down the lowermost record while the remainder of the stack of records is lifted.

Abstract: An injection syringe having a cartridge with an injection needle, and a cartridge holder. The holder is provided with resilient tabs which at one end are connected at an acute angle to the inner surface of the holder, and for the remaining part are clear of the cartridge holder. The free end engage a neck portion of the cartridge, thereby locking the cartridge in the holder.