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LED Current Limiting Practice with Arduino and Zener Diodes

Practice setting up LED current limiting using Arduino with Zener diodes. Calculate resistor value and power dissipation. Reference: http://sound.westhost.com/appnotes/an008.htm

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LED Current Limiting Practice with Arduino and Zener Diodes

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  1. Warmup – 23FEB2012 Arduino This one is for practice. I have paper if you need it. PB0 Suppose there is an LED on PB0. Assume that the forward voltage, Vf, for the LED is 2 V. Find R to limit the current through the LED to 10 mA What power will be dissipated when the LED turns on? R

  2. Power Dissipated

  3. Application of ZenerDiodes http://sound.westhost.com/appnotes/an008.htm

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