Quick questions on 555 astable timer - WJEC GCSE Electronics (8)

3short Q&A pairs drawn directly from our worked dot-point answer. For full context and worked exam questions, read the parent dot-point page.

What are power-of-ten errors?

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Convert

\text{k}\Omega

and

\mu\text{F}

before substituting into the frequency equation.

What is q1?

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A 555 astable has

R_1 = 1.0\,\text{k}\Omega

R_2 = 10\,\text{k}\Omega

and

C = 1.0\,\mu\text{F}

. Calculate the frequency. [3 marks]

What is q2?

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State what the period of a square wave represents. [1 mark]

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