公开(公告)号：WO1993000690A1

公开(公告)日：1993-01-07

申请号：PCT/US1992004550

申请日：1992-06-01

Applicant: MOTOROLA LIGHTING, INC.

Inventor： MOTOROLA LIGHTING, INC. ,  STOKES, Rembert, R. ,  UPADHYAY, Anand, K.

IPC: H01F05/02

CPC classification number: H01F5/02

Abstract: A transformer (202) has a bobbin (2) with an inner portion (104) supporting an inner electrical winding (140) and having a magnetic core recess. The inner portion is located within an outer portion (4) supporting an outer electrical winding (40). The inner portion has an end with a termination connected to the inner winding, an annular recess (126) in which the inner winding is situated, and a channel (132) communicating between the termination end of the inner portion and a remote end of the annular recess. The channel is positioned radially inwardly of the annular recess and accommodates a portion of the inner winding. By providing the channel radially inwardly of the annular recess, winding wire can extend between the termination end of the inner portion and the remote end of the annular recess across the annular recess without significantly increasing the size of the inner portion and without increasing the gap between the inner and outer portions. The size, weight and cost of a transformer built with the bobbin can be reduced, and the transformer's magnetic performance improved. Layered windings terminating at the same end of the inner portion can be formed from an odd number of winding passes, reducing corona voltage breakdown effect and so prolonging the practical life of the windings. The inner portion can be wound uninterruptedly by machine without manual intervention.

公开(公告)号：WO1992022184A1

公开(公告)日：1992-12-10

申请号：PCT/US1992004251

申请日：1992-05-21

Applicant: MOTOROLA LIGHTING, INC.

Inventor： MOTOROLA LIGHTING, INC. ,  MOISIN, Mihail, S. ,  KONOPKA, John, G.

IPC: H05B41/29

CPC classification number: H05B41/2853 ,  H05B41/2986 ,  H05B41/3925 ,  Y02B20/185 ,  Y02B20/186 ,  Y10S315/07

Abstract: A circuit for driving gas discharge lamps (102, 104, 106) from a nominal-level voltage supply includes: a voltage boost IC (144); an oscillator (196, 198, 178, 180) producing a high-frequency output voltage applied to the lamps via a transformer (212); and a voltage clamp (215A, 215B) coupling the transformer to the oscillator input (174, 176). The IC (144) regulates the power drawn by the circuit to a constant level if the supply voltage is greater than 95 % of its nominal value. If the supply voltage falls to less than 95 % of its nominal value, regulation is lost and the circuit draws less power in proportion to the fall in the supply voltage. If the supply voltage falls to less than 90 % of its nominal value the clamp operates to reduce the power drawn by the circuit at a rate greater than that of the fall in the supply voltage. The circuit thus enables the power drawn by the circuit to be reduced by reducing the supply voltage to less than 95 % of its nominal value.

公开(公告)号：WO9216082A3

公开(公告)日：1992-11-26

申请号：PCT/US9201873

申请日：1992-03-06

Applicant: MOTOROLA LIGHTING INC

Inventor： MOISIN MIHAIL S

IPC: H05B41/24 ,  H05B41/282 ,  H05B

CPC classification number: H05B41/282 ,  Y02B20/183

Abstract: A circuit (500) for driving series-connected gas discharge lamps from a transformer secondary winding (528) connected at first (529A) and second (529B) points respectively to first (508) and second (514) output terminals across the lamps. A capacitor (532) couples the first point to an intermediate output terminal (512). The pre-strike voltage produced across the secondary winding is applied across a single lamp (506) to cause it to strike. After striking, current to the intermediate output terminal (512) is limited by the capacitor (532), and the lamps are driven in series. In this way, the voltage which needs to be produced across the secondary winding to ensure striking of all lamps is reduced. Alternatively, the output terminals across the lamps may be connected to points on the secondary winding further apart than the first and second points (Fig. 6) or intermediate the first and second points (Figs. 1-4).

公开(公告)号：WO1992017892A1

公开(公告)日：1992-10-15

申请号：PCT/US1992002784

申请日：1992-04-01

Applicant: MOTOROLA LIGHTING, INC.

Inventor： MOTOROLA LIGHTING, INC. ,  UPADHYAY, Anand, K.

IPC: H01F27/34

CPC classification number: H01F27/346 ,  H01F2027/348

Abstract: An inductor (2) having a "double-E" core (4, 6) with an air gap (16) between its center limbs. A bobbin (8) has a hollow interior in which the core's center limbs and gap are positioned, and around which a winding (12) is wound spanning the gap. The bobbin has a shoulder (10) in the region of the gap which spaces the winding from the core in that region. Fringing flux (20, 22) generated in the region of the gap is contained within the transformer and a reduction is achieved in the amount of fringing flux which intersects with the winding and generates eddy current heating and power losses. With the addition of a secondary winding (114), the inductor may form a transformer (102).

Abstract translation: 具有在其中心四肢之间具有气隙（16）的“双E”芯（4,6）的电感器（2）。 线轴（8）具有中空的内部，其中芯的中心四肢和间隙被定位在其周围，缠绕绕组（12）绕其间隙。 线轴在间隙的区域中具有肩部（10），该肩部在该区域中将芯线与绕组隔开。 在间隙的区域内产生的产生磁通（20,22）的部分被包含在变压器内，并且与绕组相交的边缘磁通的量得到减小并产生涡流加热和功率损失。 通过添加次级绕组（114），电感器可以形成变压器（102）。

公开(公告)号：WO1995024819A1

公开(公告)日：1995-09-14

申请号：PCT/US1995001248

申请日：1995-02-01

Applicant: MOTOROLA LIGHTING, INC., a subsidiary corporation of MOTOROLA, INC.

Inventor： MOTOROLA LIGHTING, INC., a subsidiary corporation of MOTOROLA, INC. ,  NOTOHAMIPRODJO, Hubertus ,  WONG, John, M. ,  STEPHENS, Dennis, L.

IPC: H05B37/00

CPC classification number: H05B41/2855 ,  H05B41/3925 ,  Y10S315/04

Abstract: A ballast circuit uses an optocoupler (140) to provide electrical isolation of the dimming control (152) from the remainder of the ballast. The optocoupler (140) is operated in the linear range to provide continuous dimming of the lamps. The circuit further uses a combination of diodes and a diode bridge (206) to steer current from the current sensor during the lamp out conditions so that the inverter (100) will maintain operation at a low frequency, thereby maximizing the output voltage. A clamp winding is used to insure that the voltage does not exceed the DC rail voltage.

Abstract translation: 镇流器电路使用光耦合器（140）来提供调光控制（152）与其余镇流器的电隔离。 光耦合器（140）在线性范围内操作以提供灯的连续调光。 该电路进一步使用二极管和二极管电桥（206）的组合来在熄灯条件期间引导来自电流传感器的电流，使得逆变器（100）将保持低频工作，从而最大化输出电压。 钳位绕组用于确保电压不超过直流轨电压。

公开(公告)号：WO1995016338A1

公开(公告)日：1995-06-15

申请号：PCT/US1994012770

申请日：1994-11-09

Applicant: MOTOROLA LIGHTING, INC., a subsidiary corporation of MOTOROLA, INC.

Inventor： MOTOROLA LIGHTING, INC., a subsidiary corporation of MOTOROLA, INC. ,  SHACKLE, Peter, W.

IPC: H05B41/16

CPC classification number: H05B41/28 ,  H02M2001/4275 ,  Y02B70/126 ,  Y10S315/05

Abstract: A parallel resonant circuit (310, 330) for powering a gas discharge lamp (380) achieves power factor correction by using a floating power supply (200, 400, 390) having adjustable voltage and impedance level. The floating power supply is powered by a transformer and placed in series with the rectified AC power line.

Abstract translation: 用于为气体放电灯（380）供电的并联谐振电路（310,330）通过使用具有可调电压和阻抗水平的浮动电源（200,400,390）来实现功率因数校正。 浮动电源由变压器供电，与整流交流电源线串联放置。

公开(公告)号：WO1994010823A1

公开(公告)日：1994-05-11

申请号：PCT/US1993009720

申请日：1993-10-12

Applicant: MOTOROLA LIGHTING INC.

Inventor： MOTOROLA LIGHTING INC. ,  TURNER, Thomas, W.

IPC: H05B37/02

CPC classification number: H05B41/2855

Abstract: A circuit for driving gas discharge lamps has a bandpass filter coupled between the output of the inverter (112) and the inverter control. The bandpass filter provides protection against the diode operation of the gas discharge lamps. The bandpass filter is composed of a capacitor (180) and the permeance inductance of a transformer (134).

Abstract translation: 用于驱动气体放电灯的电路具有耦合在逆变器（112）的输出端和逆变器控制之间的带通滤波器。 带通滤波器提供防止气体放电灯的二极管操作的保护。 带通滤波器由电容器（180）和变压器（134）的磁导电感组成。

公开(公告)号：WO1993020672A1

公开(公告)日：1993-10-14

申请号：PCT/US1993002950

申请日：1993-03-29

Applicant: MOTOROLA, LIGHTING INC.

Inventor： MOTOROLA, LIGHTING INC. ,  MOISIN, Mihail, S.

IPC: H05B41/29

CPC classification number: H05B41/295 ,  Y10S315/05

Abstract: For driving gas discharge lamps (102, 104) having heatable filaments (102A, 102B, 104A, 104B), a circuit (100) has an inverter (132, 134) and a series-resonant LC oscillator (150, 158, 170) forming a self-oscillating inverter. The oscillator output provides filament-heating current through the filaments in series, and drives arc current serially through the lamps. A feedback transfomer (174) with a winding (172) connected serially in the filament-heating current path controls the operation of the inverter. A voltage clamp (180, 182) limits the voltage applied to the lamps. The circuit does not require an output-coupling transformer to couple the output of the self-oscillating inverter to lamps, thus avoiding the added cost that the use of such a transformer would bring, while providing efficient, substantially fixed frequency operation of a wide variety of lamp loads, together with the ability to address a number of lamp fault modes. Alternatively, the lamps may be driven in parallel.

公开(公告)号：WO1993000691A1

公开(公告)日：1993-01-07

申请号：PCT/US1992004549

申请日：1992-06-01

Applicant: MOTOROLA LIGHTING, INC.

Inventor： MOTOROLA LIGHTING, INC. ,  STOKES, Rembert, R.

IPC: H01F05/04

CPC classification number: H01F27/29 ,  H01F5/04 ,  H01F41/10 ,  H01F2005/043 ,  H01F2005/046 ,  H05K3/308 ,  Y10T24/3467 ,  Y10T24/46

Abstract: A transformer or inductor bobbin (2) having pins (24) of rectangular cross-section with complementarily profiled ends (24A, 24B), of which one (24A) is tapered and the other (24B) has a recess (24E). The rectangular cross-section allows the pins to offer greater resistance to bending in the direction of their cross-section's greater dimension (for pulling winding wire from the pins), while offering easier bending in the direction of their cross-section's lesser dimension (for clinching to a printed circuit board). The complementary profiles at the pins opposite ends allow the pins to be separated simply and efficiently from a length of material with no material wastage. The provision of a taper at one end of a pin and a recess at the other end allows easy insertion of the tapered end into a pre-formed printed circuit board hole, while the recessed end provides for collection of scraped material during pin insertion into an undersized hole (22) in the bobbin.

公开(公告)号：WO1992022186A1

公开(公告)日：1992-12-10

申请号：PCT/US1992004292

申请日：1992-05-21

Applicant: MOTOROLA LIGHTING, INC.

Inventor： MOTOROLA LIGHTING, INC. ,  MOISIN, Mihail, S. ,  CROUSE, Kent, E.

IPC: H05B41/29

CPC classification number: H05B41/2827 ,  Y10S315/07

Abstract: A circuit (100) for driving a gas discharge lamp load (102, 104, 106) includes an inverter (112) receiving a unidirectional voltage and producing an alternating voltage, and having a control input (156, 166). A series-resonant oscillator (126) coupled to the inverter output (116) has an inductance (128) and a capacitance (130) in series for producing an alternating current. An output transformer (134) couples the lamp load to the oscillator in series with the inductance and in parallel with the capacitance. A feedback transformer (146) has a primary winding (148) coupled in parallel with the output transformer and in series with the capacitance, and has a secondary winding (150, 152) coupled to the control input of the inverter. Since the primary winding carries only capacitive current (IC), the frequency of the circuit is substantially independent of the load. This allows the feedback transformer to be of the non-saturating-core type while retaining control of the oscillator frequency. Also, the circuit automatically shuts down in the event of load short-circuit.

Abstract translation: 一种气体放电灯（102,104,106）的充电控制电路（100），其包括经受单向电流并产生交流电流的逆变器（112），其具有控制端口（156， 166）。 耦合到逆变器输出（116）的串联谐振振荡器（126）具有串联的电感（128）和电容（130），用于产生交流电。 输出变压器（134）将灯负载连接到与电感器串联的振荡器并且与电容并联。 反馈变压器（146）包括连接在与所述输出变压器和与所述电容串联并联的初级绕组（148），并包括一个次级绕组（150，152）连接到逆变器控制的访问。 由于初级绕组仅承载电容电流（IC），因此电路频率在很大程度上与负载无关。 因此，反馈变压器可以是非饱和磁芯类型并保持其振荡器频率控制功能。 同样，如果发生负载短路，电路会自动关闭。