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Topic: LED as a zener, temperature coeficient &nbsp;(Read 98 times)
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<a href="https://www.eevblog.com/forum/projects/led-as-a-zener-temperature-coeficient/msg3214222/?PHPSESSID=io6aqrvckogk5je6vdkj4j7mt2#msg3214222" rel="nofollow">LED as a zener, temperature coeficient</a>
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<div class="smalltext">&#171; <strong> on:</strong> <strong>Yesterday</strong> at 09:35:22 pm &#187;</div>
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<div class="inner" id="msg_3214222">I&#039;ve used LED for years as a convenient way to offset voltage and provide status at the same time. A while back there a really good thread about just how stable they were with temperature.&nbsp; I&#039;ve searched and searched a variety of terms and have been unable to locate it. Did anyone bookmark this?&nbsp; I&#039;m looking to compare the TC of LED vs a standard diode.</div>
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<h5 id="subject_3214250">
<a href="https://www.eevblog.com/forum/projects/led-as-a-zener-temperature-coeficient/msg3214250/?PHPSESSID=io6aqrvckogk5je6vdkj4j7mt2#msg3214250" rel="nofollow">Re: LED as a zener, temperature coeficient</a>
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<div class="smalltext">&#171; <strong>Reply #1 on:</strong> <strong>Yesterday</strong> at 09:53:33 pm &#187;</div>
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<div class="inner" id="msg_3214250">Somewhere I have seen a table of -millivolt/C temperature coefficients for different LED processes.&nbsp; Some of them are a good match for the -2 millivolt/C of a forward biased silicon diode or base-emitter junction making them a convenient way to build temperature compensated current sources.<br/></div>
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<h5 id="subject_3214268">
<a href="https://www.eevblog.com/forum/projects/led-as-a-zener-temperature-coeficient/msg3214268/?PHPSESSID=io6aqrvckogk5je6vdkj4j7mt2#msg3214268" rel="nofollow">Re: LED as a zener, temperature coeficient</a>
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<div class="smalltext">&#171; <strong>Reply #2 on:</strong> <strong>Yesterday</strong> at 10:15:51 pm &#187;</div>
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<div class="inner" id="msg_3214268">In his book:<br/><a href="https://books.google.ca/books/about/Current_Sources_and_Voltage_References.html?id=03JmxpE39N4C&amp;printsec=frontcover&amp;source=kp_read_button&amp;redir_e;sc=y#v=onepage&amp;q&amp;f=true" class="bbc_link" target="_blank">https://books.google.ca/books/about/Current_Sources_and_Voltage_References.html?id=03JmxpE39N4C&amp;printsec=frontcover&amp;source=kp_read_button&amp;redir_esc=y#v=onepage&amp;q&amp;f=true</a><br/>page 118&nbsp; Linden T. Harrison gives some numbers</div>
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