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IRPLCFL4
The 3 way dimming light bulb has two filaments inside which produce different light outputs when
connected to the AC line. These filaments are connected in series such that the mid point goes to the
line common and the two ends can be connected to the live either independently or both together.
Thus with an external switch that has four positions, it is possible to obtain 3 different light levels or to
switch off.
Live
120V AC Line
Neutral
3 Way Dimming Switch
3 Way Dimming Light Bulb
40W Filament
60W Filament
Existing Ballast Solutions
There are in existence CFL ballast designs that perform the same task. A common approach is a
system whereby the line voltage is full wave rectified when one live input is connected and a voltage
doubler circuit comes into operation when the other live input is connected or both are connected
together thereby having two DC bus voltages in the ballast during dim level settings. This type of
design also operates at two different frequencies, a low frequency (typically 40-45kHz) when both
live inputs are connected providing a high lamp current and a higher frequency (for example 70-
75kHz) when either of the two lives is connected alone which will produce a lower lamp current. In this
way the following combinations are achieved:
1. Low DC bus (150V) / high frequency ….. minimum output
2. High DC bus (300V) / high frequency …... medium output
3. High DC bus (300V) / low frequency …… maximum output
2
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相关代理商/技术参数
IRPLCFL5E 功能描述:KIT DESIGN CFL BALLAST 220VAC RoHS:否 类别:编程器，开发系统 >> 过时/停产零件编号 系列:- 标准包装:1 系列:- 类型:MCU 适用于相关产品:Freescale MC68HC908LJ/LK（80-QFP ZIF 插口） 所含物品:面板、缆线、软件、数据表和用户手册 其它名称:520-1035
IRPLCFL5U 功能描述:KIT DESIGN CFL BALLAST 120VAC RoHS:否 类别:编程器，开发系统 >> 过时/停产零件编号 系列:- 标准包装:1 系列:- 类型:MCU 适用于相关产品:Freescale MC68HC908LJ/LK（80-QFP ZIF 插口） 所含物品:面板、缆线、软件、数据表和用户手册 其它名称:520-1035
IRPLCFL7U 制造商:International Rectifier 功能描述:9999V 999.000A OTHER - Boxed Product (Development Kits)
IRPLCFL8U 功能描述:电源管理IC开发工具 3 lvl Dim CFL Fluor Ballast w/IRS2530D RoHS:否 制造商:Maxim Integrated 产品:Evaluation Kits 类型:Battery Management 工具用于评估:MAX17710GB 输入电压: 输出电压:1.8 V
IRPLCFL9U 功能描述:电源管理IC开发工具 3 lvl Dim CFL Fluor Ballast Ref dsgn RoHS:否 制造商:Maxim Integrated 产品:Evaluation Kits 类型:Battery Management 工具用于评估:MAX17710GB 输入电压: 输出电压:1.8 V
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IRPLDIM1E 功能描述:KIT BALLAST DIMMING 230VAC RoHS:否 类别:编程器，开发系统 >> 过时/停产零件编号 系列:- 标准包装:1 系列:- 类型:MCU 适用于相关产品:Freescale MC68HC908LJ/LK（80-QFP ZIF 插口） 所含物品:面板、缆线、软件、数据表和用户手册 其它名称:520-1035
IRPLDIM1U 功能描述:BALLAST DIMMING 32W/T8 120VAC RoHS:否 类别:编程器，开发系统 >> 过时/停产零件编号 系列:- 标准包装:1 系列:- 类型:MCU 适用于相关产品:Freescale MC68HC908LJ/LK（80-QFP ZIF 插口） 所含物品:面板、缆线、软件、数据表和用户手册 其它名称:520-1035