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jwilliams113
modified 5 years ago

ELEC133 Lab 9 - 555 - Part 1

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02:14:09
ELEC133 Lab 9 - 555 - Part 1
published 5 years ago
wyoelk
5 years ago
Your circuit is fine except for the current limiting resistor. Leds in this app are 2v and 20ma. 5v-2v=3vĂ·20ma=150ohm for the resistor.
Robert_Kidd
5 years ago
The supply voltage is 5V but the pin 3 output is not 5V.
wyoelk
5 years ago
You are correct, my mistake. It is 3.5 due to the 555 internal characteristics with a 5v source. Thanks

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