Question
If the internal resistance of a voltage source is $50 \Omega$, what is the required input resistance of the amplifier in order to only lose $10 \%$ of the signal amplitude at the input?
Step 1
We have the internal resistance of the voltage source, \( R_s = 50 \, \Omega \), and we want to ensure that only \( 10\% \) of the signal amplitude is lost at the input of the amplifier. Show more…
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Suppose we have a resistive load that varies from $5 \mathrm{k} \Omega$ to $10 \mathrm{k} \Omega$. We connect this load to an amplifier, and we need the voltage across the load to vary by less than 1 per cent with variations in the load resistance.
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