Discussion
Why is a single-supply amplifier's output coupled through a capacitor?
Answer: D
With one rail the output stage idles at half the supply, so a capacitor is needed to keep that standing voltage out of the loudspeaker while passing the signal. Switching frequency belongs to class D, matching is unnecessary, and feedback is taken separately. The capacitor must be large, since it works into a few ohms, and it sets the amplifier's low-frequency limit - which is the principal reason split supplies displaced the arrangement. Naming the cost of a choice alongside its benefit is what turns a fact into a design decision.
No comment is present. Be the first to comment.
Loading…
Post your comment
Please log in or register to post a comment.
Examination Categories
- SSC Exams
- Banking Exams
- Teaching Exams
- Civil Services Exams
- Railways Exams
- Engineering Recruitment Exams
- Defence Exams
- State Government Exams
- Police Exams
- Insurance Exams
- Nursing Exams
- Other Government Exams
- NRA CET
- PG Entrance Exams
- Campus Placement
- MBA Entrance Exams
- CUET and UG Entrance
- Judiciary Exams
- Regulatory Body Exams
- Software Development