Question

Under steady-state conditions, the clamping theorem states that

• A. \[ \frac{A_f}{A_r} = \frac{R_f}{R} \]
• B. \[ \frac{A_r}{A_f} = \frac{R_f}{R} \]
• C. \[ \frac{A_f}{A_r} = \frac{R}{R_f} \]
• D. \[ \frac{A_f}{A_r}=1 \]

Hint:

The clamping theorem is useful in determining the dc shift introduced by clamper circuits.

Answer 1

The Correct Option is A

Concept: The clamping theorem is applied in clamping circuits under steady-state conditions. It relates the forward and reverse areas of the waveform to the charging and discharging resistances.

Step 1: State the theorem.
For a steady-state clamping circuit, \[ \frac{A_f}{A_r} = \frac{R_f}{R} \] where \[ A_f=\text{Forward area} \] and \[ A_r=\text{Reverse area}. \]

Step 2: Compare with options.
The above relation matches option (A). Hence, \[ \boxed{ \frac{A_f}{A_r} = \frac{R_f}{R} } \]