Explain the working of Astable multivibrator using IC-555.

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teamques10 ★ 65k

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Mumbai University > Information Technology > sem 3> Analog and Digital Circuits

Marks: 10M

Year: May16

digital electronics

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written 7.4 years ago by

teamques10 ★ 65k

Operation of Astable Multivibrator mode of 555 timer IC:

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⦁ When initially power is turned ON, Trigger Pin voltage is below Vcc/3, that makes the lower comparator output HIGH and SETS the flip flop and output of the 555 chip is HIGH.

⦁ This makes the transistor Q1 OFF, because …

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