Transistor Biasing PurposeHardQuestion 20243
Question
The purpose of DC biasing a transistor amplifier is to:
- AProvide a path for AC signal only
- BEstablish a stable Q-point in the active region for linear amplification without clippingCorrect
- CIncrease β
- DReduce collector resistance
Correct answer
Establish a stable Q-point in the active region for linear amplification without clipping
Explanation
Without DC bias, only positive or negative signal half-cycles would be amplified (clipping). Proper bias (voltage divider, self-bias) sets the Q-point in the middle of the load line so both positive and negative signal swings are amplified without clipping.