发明名称 |
Process and circuitry for controlling a load |
摘要 |
A current source and an associated method for supplying current to a load such as an arrangement of LEDs. The intensity of the supplied current varies as a function of the temperature of the load. The intensity of the current is temperature-dependent and limited to a predefined maximum. The temperature dependence is achieved by the component parts that are used without the help of special temperature sensors. The current source is supplied with a reference voltage derived from an integrated circuit. The reference voltage is tapped from a port of the IC and therefore it is switchable. The reference voltage is used to produce a control current, which is fed through a driver stage to produce the current of the current source. Elements in the current source limit the current's intensity and change it as a function of temperature. |
申请公布号 |
US8659235(B2) |
申请公布日期 |
2014.02.25 |
申请号 |
US20100717585 |
申请日期 |
2010.03.04 |
申请人 |
VOGLER GERD;SIMANEK INGO;BERKENKAMP FRIED;LEAR CORPORATION GMBH |
发明人 |
VOGLER GERD;SIMANEK INGO;BERKENKAMP FRIED |
分类号 |
H05B37/02 |
主分类号 |
H05B37/02 |
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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