🔍 Key Concepts
• Amplifier classes (A, B, AB, C) and how they differ in conduction angle
• Meaning of conduction angle in degrees of the input cycle (0–360°)
• How bias point relative to cutoff affects when a transistor conducts
💭 Think About
• Compare how long a Class A amplifier conducts in one cycle versus a Class C amplifier—more or less of the cycle?
• Think about where the transistor is biased in Class C: is it biased to be on most of the time, exactly half, or mostly off and only turned on by the signal peaks?
• Which option(s) describe both the portion of the cycle with output AND the bias setting typical for Class C?
✅ Before You Answer
• Be clear on that Class A conducts for the full 360° of the input cycle; use that as a reference
• Remember that Class B conducts for about 180° of the input cycle; use that to locate where Class C falls
• Verify which choices correctly describe less than 180° conduction and a bias point set beyond cutoff; check if more than one statement can be true at the same time