145results about How to "Avoid going out" patented technology

A wireless airbag apparatus may include an airbag control unit (ACU) receiving a sensing signal from a collision sensor and having a first wireless communication unit, and an airbag module having a second wireless communication unit and a power supply circuit to transceive a signal with the wireless communication unit of the ACU, wherein the power supply circuit supplies operating power to an inflator in accordance with a deployment signal of the airbag module.

The invention discloses a dust explosion experimenting device, and relates to the technical field of manufacturing of experiment teaching aids. The dust explosion experimenting device comprises a tank body with a cover body at a tank opening, and a dust container arranged inside the tank body and communicated with an air pump, wherein a partition board is arranged at the inner bottom of the tank body and at a position close to the tank wall; the partition board and the inner wall of the tank body surround the dust container; a combustion vessel is arranged on one side, with the dust container, of the tank body. Compared with the prior art, the dust explosion experimenting device has the advantage that the explosion experimenting device can solve the problem that the existing dust explosion experiment is low in success rate.

A dimming electronic ballast control provides flash suppression by igniting the fluorescent lamp at a high power level, and then reducing the power output level to the appropriate dimming set level. The electronic ballast includes an integrated circuit that uses closed loop phase control and a VCO to control a switching frequency of a half bridge, which in turn controls power delivered to the fluorescent lamp. Current through the half bridge is sensed to provide closed loop control. The current sense signal is used to provide a high power level in the electronic ballast during ignition of the lamp, and as a phase detector for the phase control. A rate of change control circuit controls the speed of adjustment between power level settings, especially during ignition of the lamp. The electronic ballast provides a wide linear dimming range with fault detection and flash suppression.

The present invention relates to a circuit arrangement for operation of a discharge lamp, comprising: an input having a first input connection (E1) and a second input connection (E2) for connection of a supply voltage; a first electronic switch (Q1), which has a control electrode, a working electrode and a reference electrode, wherein the working electrode is coupled to the first input connection (E1); a first diode (D1), the anode of which is coupled to the second input (E2) and the cathode of which is coupled to the reference electrode of the first electronic switch (Q1) to form a first junction point (N); a control apparatus (12), which is coupled to the control electrode of the first electronic switch (Q1) in order to drive said first electronic switch (Q1); an output with a first output connection (A1) and a second output connection (A2) for providing an output voltage (UA) to the discharge lamp (La); an inductance (Lz), which is arranged in series with one of the output connections (A1; A2); a lamp inductor (L1), which is coupled between the first junction point (N) and the first output connection (A1); and a first capacitor (C1), which is coupled between the first output connection (A1) and the anode of the first diode (D1); wherein the control apparatus (12) is designed to switch the first electronic switch (Q1) on continuously for a switched-on time and to switch it off continuously for a switched-off time; wherein the circuit arrangement furthermore comprises a voltage measurement apparatus (10) for measuring the output voltage (UA), wherein the voltage measurement apparatus (10) is designed to produce at its output a signal which is correlated with the measured output voltage (UA) wherein the voltage measurement apparatus (10) is coupled to the control apparatus (12) in order to transmit this signal to the control apparatus (12), and wherein the control apparatus (12) is designed to vary the switched-off time (Toff) as a function of the measured output.

The invention provides an escape type anti-theft window. The escape type anti-theft window comprises an anti-theft window frame, an escape frame and a fireproof top box, wherein the fireproof top boxis fixedly mounted at the top of the anti-theft window frame, the anti-theft window frame is fixedly provided with guard bars, the bottom of the anti-theft window frame is provided with an escape doorthrough hinges, and a locker is installed on the escape door; and a driving rotating rod, a first driven rotating rod and a second driven rotating rod are installed between the inner side walls of the two sides of the fireproof top box through bearings respectively, the two ends of the driving rotating rod are fixedly installed with a second transmission gear and a third transmission gear respectively, driven gears are fixedly installed at the positions, corresponding to the second transmission gear and the third transmission gear, of one ends of the first driven rotating rod and the second driven rotating rod, and the second transmission gear and the third transmission gear are meshed with the corresponding driven gear. The escape type anti-theft window is reasonable in design, high in safety and convenient to escape.