Get ready for the FCC General Radiotelephone Operator License (GROL) exam. Study with flashcards and multiple choice questions, each with hints and detailed explanations. Prepare effectively for your licensing test!

Multiple Choice

The class B amplifier output is present for what portion of the input cycle?

In Class B, the active device conducts for exactly half of the input cycle, so the conduction angle is 180 degrees. Because the bias is at cutoff, the transistor turns on for one half-cycle and off for the other half. In a push-pull Class B amplifier, each device handles 180 degrees, so the combined output covers the full 360 degrees, but no single device conducts more than half the cycle.

In Class B, the active device conducts for exactly half of the input cycle, so the conduction angle is 180 degrees. Because the bias is at cutoff, the transistor turns on for one half-cycle and off for the other half. In a push-pull Class B amplifier, each device handles 180 degrees, so the combined output covers the full 360 degrees, but no single device conducts more than half the cycle.