Abstract: An electrical device such as a ballast for fluorescent lamps and including a housing, a terminal, and a catch element for connecting the terminal to the housing, the catch element including a catch leg for connecting the terminal to the catch element and for connecting the catch element to the housing. Accordingly, the electrical device is designed such that the individual terminal sites of the terminal have minimal positional tolerance so that the terminal can be wired with an automatic installation machine without the danger of misinsertions.

Abstract: A sensor-controlled lamp and a method for triggering it. The sensor signals are evaluated by means of a microprocessor, and on the basis of the change over time in the sensor signals, operating parameters of the lamp controller are changed or activated.

Abstract: Operating device for operating light sources, having at least one inductor in the form of a wound item with wire ends (7, 8), characterized in that the wound item includes a part (1) that both is magnetically active and accomplishes the fixing of the wire ends (7, 8), said part being produced from one material throughout.

Abstract: A sensor-controlled lamp and a method for triggering it. The sensor signals are evaluated by means of a microprocessor, and on the basis of the change over time in the sensor signals, operating parameters of the lamp controller are changed or activated.

Abstract: An electrical connection unit including a housing with at least one terminal for receiving either an insulated lead or a stripped lead and at least one metal part having a cutting element and a spring element. The cutting element and the spring element are located along a longitudinal extension of the lead thereby minimizing the height of the electrical connection unit such that it may be used in confined spaces. In accordance with one embodiment, the cutting element and the spring element coincide in space such that they are substantially coplanar to further reduce the size of the electrical connection unit. In accordance with one embodiment of the present invention, the metal part serves a dual function as a cutting element and also as a spring element and has an essentially box-shaped configuration. The housing may also include catch projections and/or attachment cross pieces to retain the metal part in the housing. Furthermore, a mountable thrustor and /or latchable cover may also be provided.

Abstract: To insure high power factor for the operating circuit of a low-pressure discharge lamp, especially of miniature fluorescent lamps, a high-frequency active rectifier bridge (D1-D4) is provided which interrupts charging of a smoothing capacitor (C2), which smoothing capacitor supplies an inverter circuit (WR) in the switching rhythm of the inverter. A storage choke or inductance (L1), a negative feedback capacitor (CG) and an auxiliary capacitor (CS) are coupled to the high-frequency rectifier bridge (D1-D4) which, together with the inductance insure an approximately sinusoidal current being taken from a power network, with a power factor of 0.98 or higher. Preferably, the circuit includes voltage dividers (R8, R9, R11; R15, R16, R17) which are coupled to a voltage sensitive trigger circuit (DI, TH) to turn OFF alternate switching of transistors (T1, T2) of the inverter (WR) in case excess supply voltage or operating voltages of the lamp are sensed.