News post & update: eleccircuit.com |  |
| Constant current circuit using LED Posted: 04 Dec 2014 11:01 PM PST Normally the voltage drop across LED while forward bias will be about 1.2 to 1.4 volts depend on type of LED by has the temperature coefficient is -1.5 mV per degree Celsius. Which similar to the temperature coefficient of junction. between a base and emitter of silicon transistors. From this relationship can the constant current […]  |
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