摘要:
A reliable and efficient circuit for lighting a discharge lamp is described. An inverter accepts a direct current supply voltage and outputs an alternating current lamp voltage to drive the discharge lamp at a relatively high frequency. In one embodiment, the inverter includes semiconductor switches in a full-bridge configuration, a transformer feedback circuit to control the semiconductor switches, and a series L-C resonant circuit. In one embodiment, the inverter includes semiconductor switches in a half-bridge configuration, a transformer feedback circuit to control the semiconductor switches, and a series L-C resonant circuit. The inverter can drive multiple discharge lamps in a parallel configuration. A bypass circuit can also be coupled across a cathode of the discharge lamp to extend the life of the discharge lamp. The bypass circuit activates when a lamp cathode wears out.
摘要:
A high-pressure discharge lamp has a discharge vessel that is enclosed, with an interspace, by an outer bulb. The end of the outer bulb is provided with a lamp cap. The lamp has an ignition circuit including a series connection of a glow starter and an ohmic impedance. The ohmic impedance is formed by a halogen incandescent lamp. The mutual orientation of the glow starter and the ohmic impedance is such that heat produced by the ohmic impedance is at least partly intercepted by the glow starter.
摘要:
An electrode mounting structure and a flat panel display employing the same. Bonding electrodes, board electrodes, and an anisotropic conductive adhesive layer are all provided. Bonding strength and reliability of the electrode mounting structure are improved by the anisotropic conductive adhesive layer completely covering bonding electrode exposure areas after thermal compression, bonding the bonding electrodes and the board electrodes.
摘要:
In a gas-filled arrester, a pair of main electrodes and a ground electrode are air-tightly fitted to an insulating tubular member. A springy, electrically-conductive short-circuiting element having an arcuate shape is fitted around the outer wall of the ground electrode. The short-circuiting element includes extension portions extending along the outer wall of the insulating tubular member to the respective main electrodes, and these extension portions are made to face the main electrodes by utilization of spring characteristics thereof with a certain gap maintained and with a thermally-fusible spacer interposed. With this construction, if the arrester is overheated, the spacer is thermally fused by heat and therefore the extension portions electrically contact the main electrodes due to the spring characteristics thereof. Since the main electrodes are thus short-circuited to the ground electrode, the arrester is prevented from failing.
摘要:
An electronic touch control light socket used to convert a lamp to touch-sensitive use which includes a circuit housing and a light bulb insertion socket mounted thereto which together are adapted for installation within a standard light socket shell of a lamp in place of a standard light socket. A touch sensing circuit in the circuit housing has a self-compensating subcircuit to eliminate the effects of slower changing ambient capacitance of the lamp in order to detect touching of the lamp by monitoring rapid changes in lamp capacitance. A spring contact connected to the circuit is attached to the circuit housing and projects along a side thereof for placement between the circuit housing exterior and the interior surface of the light socket shell and in electrical contact with a conductive portion of the light socket shell when the circuit housing and insertion socket are installed within the light socket shell. The spring contact thereby is inaccessible from the exterior of the lamp and is adapted to convey to the circuit an electrical touch-responsive input signal generated when a person touches a conductive exterior portion of the lamp connected to the conductive portion of the light socket shell. The circuit has an operating mode control subcircuit actuatable by a manually-operable control knob for selecting the operating mode of the circuit, e.g. ON/OFF, 4-Level, or 5-Level dimmer sequences.
摘要翻译:一种用于将灯转换成触摸敏感用途的电触摸控制灯插座,其包括安装在其上的电路壳体和灯泡插入插座,其一起适于安装在灯的标准灯座外壳中以代替标准灯 插座。 电路壳体中的触摸感测电路具有自补偿子电路,以消除灯的较慢变化的环境电容的影响,以通过监测灯电容的快速变化来检测灯的接触。 连接到电路的弹簧触点附接到电路壳体并且沿其一侧突出以放置在电路外壳外部和灯插座外壳的内表面之间,并且当灯插座外壳的导电部分电气接触时 电路外壳和插座安装在灯座外壳内。 因此,弹簧触点不能从灯的外部进入,并且适于在人接触连接到灯插座壳的导电部分的灯的导电外部部分时产生的电触摸响应输入信号传送到电路。 电路具有可手动操作的控制旋钮可操作的操作模式控制分支电路,用于选择电路的操作模式,例如, ON / OFF,4级或5级调光器序列。
摘要:
A printed circuit terminal device which includes a terminal array having very fine pitch between lead lines from a circuit portion including a flexible printed circuit board having a terminal array pattern which corresponds to the terminal array and wiring pattern and which are arranged to alternately extend from two sides of the terminal array pattern thus changing the pitch of the wiring pattern on the flexible printed circuit board to be twice that of the pitch of the wiring pattern of the terminal array. This allows a circuit to be easily and reliably coupled to the electrical terminals having very fine pitch and the formation of the wiring pattern of a coupling portion with the circuit portion can be easily performed and results in an arrangement of very small size. The flexible printed circuit board can be manufactured at low cost and the yield can be increased. Also, circuit elements such as resistors can be mounted on the wiring pattern without changing the wiring pitch.
摘要:
A metal vapor discharge lamp has a burner for sealing xenon gas, mercury and a light-emitting additive in a translucent ceramic tube, a starting device of a thermal switch type which has a series circuit of a thermal switch and a coil filament and which is connected in parallel with the burner, and an outer envelope for sealing the burner and the starting device therein. In the lamp, the following inequalities must be satisfied:13.3.ltoreq.P.multidot.(B/A).ltoreq.6650.05.ltoreq.d.ltoreq.0.122,200.ltoreq.T.ltoreq.2,800where A is the volume (cm.sup.3) of the outer envelope, B is the volume (cm.sup.3) of the burner, P is a gas pressure (Pa) at room temperature of xenon sealed in the burner, d is a diameter (mm) of the coil filament, and T is a temperature (K) of the coil filament during operation.
摘要:
In a discharge tube lighting system for use in a vehicle, a heat generating element, which is made of metal material, is formed on an outer surface of a tube element of the discharge tube along the longitudinal direction of the tube element, and a temperature detecting element is provided on a surface of the heat generating element. The heat generating element is electrically driven to heat the discharge tube at a starting period of lighting the discharge tube when a temperature of the heat generating element detected by the temperature detecting element is lower than a predetermined temperature. The heat generating element is formed in a rectangular shape and conformally disposed on a portion of the tube. The heater element has first and second ends which are disposed with respect to the electrodes of the tube to cause an electric field to be provided between each electrode and the corresponding end of the heater element.
摘要:
A starter circuit for metal halide discharge lamps in which a pair of spiral line generators are coupled between the source of lamp operating power and the electrodes of the high intensity discharge lamp. The spiral line generators are connected across the electrodes, in accordance with the invention, in a manner such that the high voltage short duration pulses from the spiral line generators are substantially additive across the discharge lamp electrodes, thus, in effect, substantially doubling the breakdown voltage available across the discharge lamp electrodes.
摘要:
A high pressure sodium vapor lamp having a time fuse device effective for predeterminedly establishing the anticipated life of the high pressure lamp is disclosed. Also disclosed are various embodiments of the time fuse device.