发明名称 |
Point of use lighting controller |
摘要 |
The instant invention relates to a solid state low voltage power supply controller which reduces a conventional 120 volt AC power source to 12 volt pulsating DC for the purpose of operating a single "point of use" light source wherein the low voltage power supply is in proximate location to the light source. A pulse width modulator integrated circuit operating in conjunction with a field effect transistor induces energy in the secondary of a step-down transformer to provide a reduced pulsating DC current to a lamp load. A feedback voltage from the secondary winding of the stepdown transformer operates to set the gain of internal circuitry of the integrated circuitry to provide a predetermined constant pulsating DC voltage and a predetermined limited range of power wattage. A feedback voltage operates to reduce current drawn by overcurrent demands on the primary of the transformer.
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申请公布号 |
US6650070(B1) |
申请公布日期 |
2003.11.18 |
申请号 |
US20020205169 |
申请日期 |
2002.07.25 |
申请人 |
VARON LIGHTING, INC. |
发明人 |
HUDSON JAMES;MAYER THOMAS J. |
分类号 |
H05B39/04;(IPC1-7):H05B37/00 |
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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