发明名称 |
POWER SUPPLY FOR A LOAD CONTROL DEVICE |
摘要 |
A power supply for a load control device generates a DC voltage and provides an asymmetrical output current, while drawing a substantially symmetrical input current. The power supply comprises a controllably conductive switching circuit for controllably charging an energy storage capacitor across which the DC voltage is produced. The energy storage capacitor begins charging at the beginning of a half-cycle and stops charging after a charging time in response to the magnitude of the DC voltage and the amount of time that the energy storage capacitor has been charging during the present half-cycle. The charging time is maintained substantially constant from one half-cycle to the next. The power supply is particularly beneficial for preventing asymmetrical current from flowing in a multiple location load control system having a master load control device supplying power to a plurality of remote load control devices all located on either the line-side or the load-side of the system. |
申请公布号 |
WO2009085139(A2) |
申请公布日期 |
2009.07.09 |
申请号 |
WO2008US13726 |
申请日期 |
2008.12.15 |
申请人 |
LUTRON ELECTRONICS CO., INC.;CARMEN, DANIEL, F. |
发明人 |
CARMEN, DANIEL, F. |
分类号 |
H05B39/04 |
主分类号 |
H05B39/04 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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