Abstract: An electric motor includes a first printed circuit board having layers with conductor tracks. The layers are spaced apart from one another by first layers of insulating material, for example, fiber-reinforced plastic, e.g., an epoxy material, and an insulating layer is arranged between two of the layers.

Abstract: A diaphragm vacuum pump has a pump chamber, a vacuum diaphragm for generating an underpressure in the pump chamber, an electric motor (1) with a motor shaft, a gear and a connecting element. The gear converts a rotational movement of the motor shaft into a cyclical, approximately linear forward and rearward movement of the connecting element, as a result of which the connecting element effects a cyclical movement of the vacuum diaphragm. The rearward movement of the connecting element per cycle is effected by a first rotation angle of the motor shaft which, on account of the gear, is not of the same magnitude as a second rotation angle of the motor shaft, wherein the second rotation angle effects the forward movement of the connecting element per cycle. The diaphragm vacuum pump according to the invention can be designed such that it is small and quiet and yet provides optimal power.

Abstract: A diaphragm vacuum pump has a pump chamber, a vacuum diaphragm for generating an underpressure in the pump chamber, an electric motor with a motor shaft, a gear and a connecting element. The gear converts a rotational movement of the motor shaft into a cyclical, approximately linear forward and rearward movement of the connecting element, as a result of which the connecting element effects a cyclical movement of the vacuum diaphragm. The rearward movement of the connecting element per cycle is effected by a first rotation angle of the motor shaft which, on account of the gear, is not of the same magnitude as a second rotation angle of the motor shaft, wherein the second rotation angle effects the forward movement of the connecting element per cycle. The diaphragm vacuum pump according to the invention can be designed such that it is small and quiet and yet provides optimal power.

Abstract: A medical suction pump for aspiration of bodily fluid has a suction pump housing, a fluid collection container held releasably on the housing, and at least one filling level sensor. The fluid collection container has a first side wall and at least one further side wall which together delimit at least one interior space for receiving the aspirated fluid. The at least one filling level sensor extends at least approximately parallel to the first side wall over at least a partial area of the fillable height of the interior space. The first side wall is place at least in part, and the cross section of the at least one interior space tapers vertically from the top downwards, at least over a partial area of the fillable height.

Abstract: A drainage pump unit for aspirating body fluids by means of a suction pump has a suction pump arranged in a suction pump housing, wherein a fluid collection container can be secured releasably on the suction pump housing, and wherein a capacitive filling level sensor is arranged on the suction pump housing for detecting a filling level in the fluid collection container. The filling level sensor has at least two electrodes, which are arranged at a distance from each other and extend along a common path. A first of the electrodes is in one piece, and a second of the electrodes is segmented. This arrangement permits the production of inexpensive fluid collection containers while still ensuring a high degree of measurement accuracy.

Abstract: A drainage pump unit for aspirating body fluids by means of a suction pump has a suction pump arranged in a suction pump housing, wherein a fluid collection container can be secured releasably on the suction pump housing, and wherein a capacitive filling level sensor is arranged on the suction pump housing for detecting a filling level in the fluid collection container. The filling level sensor has at least two electrodes, which are arranged at a distance from each other and extend along a common path. A first of the electrodes is in one piece, and a second of the electrodes is segmented. This arrangement permits the production of inexpensive fluid collection containers while still ensuring a high degree of measurement accuracy.

Abstract: A Wire Bonder contains a bondhead and a rocker arranged on the bondhead that is rotatable on a horizontal axis. A horn with a flange is attached to the rocker in which a capillary is clamped. At least one sensor is attached to the bondhead that detects vibrations of the bondhead and at least one actuator is arranged between the flange and the rocker that enables movement of the horn relative to the rocker. From an output signal delivered by the at least one sensor, a control device calculates a control signal for the at least one actuator and drives the at least one actuator in order to eliminate or at least reduce vibrations of the horn. The at least one sensor is preferably arranged on the rocker and is preferably an acceleration sensor.

Abstract: A Wire Bonder contains a bondhead and a rocker arranged on the bondhead that is rotatable on a horizontal axis. A horn with a flange is attached to the rocker in which a capillary is clamped. At least one sensor is attached to the bondhead that detects vibrations of the bondhead and at least one actuator is arranged between the flange and the rocker that enables movement of the horn relative to the rocker. From an output signal delivered by the at least one sensor, a control device calculates a control signal for the at least one actuator and drives the at least one actuator in order to eliminate or at least reduce vibrations of the horn. The at least one sensor is preferably arranged on the rocker and is preferably an acceleration sensor.

Abstract: A device for measuring the oscillation amplitude of the tip of a capillary by means of a light beam comprises a light source and an opto-receiver and two apertured diaphragms that are arranged between the light source and the opto-receiver and which lie on a common axis. The apertured diaphragms are preferably formed by means of drill holes arranged on a common axis in side walls of a channel formed in a body. The two apertured diaphragms define the diameter of the light beam.

Abstract: A device for measuring the oscillation amplitude of the tip of a capillary by means of a light beam comprises a light source and an opto-receiver and two apertured diaphragms that are arranged between the light source and the opto-receiver and which lie on a common axis. The apertured diaphragms are preferably formed by means of drill holes arranged on a common axis in side walls of a channel formed in a body. The two apertured diaphragms define the diameter of the light beam.

Abstract: In order that, on wire bonding by means of a Wire Bonder, optimum bonding results can be achieved after a capillary change it is suggested that, after a change from a first capillary to a second capillary, the ultrasonic transducer which applies ultrasonics to the horn which guides the capillary is controlled with a parameter P2 which results from the parameter P1 before the capillary change as P2=g(k1, k2)*P1 or P2=g(k1, k2, A1, A2)*P1 or P2=g(k1, k2, A1, A2, H1, H2)*P1, whereby the quantities k1 and k2 designate the estimated values for the flexural strength, the quantities A1 and A2 the amplitudes of the freely oscillating capillary and H1 and H2 the diameters in the narrowest part of the longitudinal drill hole of the first or second capillary and whereby the function g is a predetermined function.

Abstract: In order that, on wire bonding by means of a Wire Bonder, optimum bonding results can be achieved after a capillary change it is suggested that, after a change from a first capillary to a second capillary, the ultrasonic transducer which applies ultrasonics to the horn which guides the capillary is controlled with a parameter P2 which results from the parameter P1 before the capillary change as P2=g(k1, k2)*P1 or P2=g(k1, k2, A1, A2)*P1 or P2=g(k1, k2, A1, A2, H1, H2)*P1, whereby the quantities k1 and k2 designate the estimated values for the flexural strength, the quantities A1 and A2 the amplitudes of the freely oscillating capillary and H1 and H2 the diameters in the narrowest part of the longitudinal drill hole of the first or second capillary and whereby the function g is a predetermined function.