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The BMW Range
3 Series
E46
New DVD Player Special For E46
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<blockquote data-quote="jarance" data-source="post: 475696" data-attributes="member: 21"><p>yes, LED have non linear current characteristic. It call forward bias current. When it conduct due to the voltage, the current will increase rapidly.</p><p>Normal LED have bias voltage of 1.5 V whereas super bright LED are rated to 3.0 V or more. So for most application of 12VDC, it is normal to use 470 ohms</p><p>to be wired in series with the LED to limit the current.</p><p></p><p>In the case of SMD LED, you will also see SMD resistor wired in series with the LED.</p></blockquote><p></p>
[QUOTE="jarance, post: 475696, member: 21"] yes, LED have non linear current characteristic. It call forward bias current. When it conduct due to the voltage, the current will increase rapidly. Normal LED have bias voltage of 1.5 V whereas super bright LED are rated to 3.0 V or more. So for most application of 12VDC, it is normal to use 470 ohms to be wired in series with the LED to limit the current. In the case of SMD LED, you will also see SMD resistor wired in series with the LED. [/QUOTE]
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