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公开(公告)号：EP0636304A1
公开(公告)日：1995-02-01
申请号：EP94907270.0
申请日：1994-01-25
CPC分类号： H02M1/425 , H02M2001/4275 , H05B41/28 , H05B41/2855 , Y02B70/126
摘要： A circuit for powering a gas discharge lamp from a source of a first frequency AC power has a first rectifier (104) for converting the first frequency AC power into a first DC power, a capacitor (108) and driver (110) for converting the DC power to a second frequency AC power. A second rectifier (106) is used to increase the power factor for the circuit. A control (136) is provided to disable the second rectifier if the lamp is removed from the circuit.
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公开(公告)号：EP0689757A1
公开(公告)日：1996-01-03
申请号：EP95902456.0
申请日：1994-11-09
发明人： SHACKLE, Peter, W.
IPC分类号： H05B41
CPC分类号： H05B41/28 , H02M2001/4275 , Y02B70/126 , Y10S315/05
摘要： 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.
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公开(公告)号：EP0683966A1
公开(公告)日：1995-11-29
申请号：EP95901160.0
申请日：1994-11-07
发明人： SHACKLE, Peter, W.
IPC分类号： H05B41
CPC分类号： H05B41/28 , H02M2001/4275 , Y02B70/126 , Y10S315/05
摘要： A power factor corrected electronic ballast circuit uses two transformer components (130, 230). An inductively coupled charge pump technique is used for power factor correction (130) while the gates of the transistor switches (20, 30) are driven directly from a resonant inductor (40).
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4.发明公开TOGGLE BRIGHTENING CIRCUIT FOR POWERING GAS DISCHARGE LAMPS AND METHOD FOR OPERATING GAS DISCHARGE LAMPS 失效开关OPERATED照明回路测设放电灯和方法的亮度驱动放电灯。
公开(公告)号：EP0654156A1
公开(公告)日：1995-05-24
申请号：EP94915360.0
申请日：1994-04-08
IPC分类号： H05B41
CPC分类号： H05B41/36 , Y10S315/04 , Y10S315/07
摘要： A circuit (100) for powering fluorescent lamps (102, 104 and 106) includes a switch (50) having 'open' and 'closed' positions. When power is initially applied to the circuit, the lamps are powered at full power to enable them to 'strike'. After a short period, the power is reduced to the lamp. A control circuit (300) thereafter senses if the switch has been 'toggled'. If toggled, the power to the lamps is increased, and the lamps brighten. The circuit uses a conventional two-position switch and conventional wiring and avoids the need for additional switches and additional wiring.
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公开(公告)号：EP0681779B1
公开(公告)日：1999-10-20
申请号：EP94929809.5
申请日：1994-09-16
CPC分类号： H05B41/28 , Y10S315/05 , Y10S315/07
摘要： A circuit for powering gas discharge lamps (502, 504) includes a power factor correction inductor (104) coupled to a source of rectified, pulsating AC power (10). An energy storage circuit (300) is connected to the power factor correction inductor (104), and a switch (202) is coupled to a junction between the power factor correction inductor (104) and the energy storage circuit (300). A resonant circuit (400) couples the energy storage circuit (300) to the gas discharge lamps (502, 504).
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6.发明公开PROTECTION CIRCUIT FOR ELECTRONIC BALLASTS WHICH USE CHARGE PUMP POWER FACTOR CORRECTION 失效保护电路具有电荷泵继电器的功率因数提高电子VORSCHALGERÄT
公开(公告)号：EP0688492A1
公开(公告)日：1995-12-27
申请号：EP95901794.0
申请日：1994-11-07
发明人： SHACKLE, Peter, W.
IPC分类号： H05B41
CPC分类号： H05B41/28 , H02M2001/4275 , Y02B70/126 , Y10S315/05 , Y10S315/07
摘要： A protection circuit for electronic ballasts which use charge pump power factor correction includes a switch (160) with an overvoltage sensor (150), a resistor (170) and a diode (70). In the event of a fault condition, the switch (160) disables the charge pump power factor correction, while the resistor (170) and diode (70) prevent the switch (160) dissipating unduly large amounts of energy.
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公开(公告)号：EP0681779A1
公开(公告)日：1995-11-15
申请号：EP94929809.0
申请日：1994-09-16
IPC分类号： H05B41
CPC分类号： H05B41/28 , Y10S315/05 , Y10S315/07
摘要： A circuit for powering gas discharge lamps (502, 504) includes a power factor correction inductor (104) coupled to a source of rectified, pulsating AC power (10). An energy storage circuit (300) is connected to the power factor correction inductor (104), and a switch (202) is coupled to a junction between the power factor correction inductor (104) and the energy storage circuit (300). A resonant circuit (400) couples the energy storage circuit (300) to the gas discharge lamps (502, 504).
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