Discussion
Why is hFE specified at a stated collector current?
Answer: C
Beta rises from low current, peaks, and falls again at high current, so a single figure is meaningless without the current it was measured at. The thermal voltage is set by temperature alone, leakage is largely independent of the operating current, and the collector voltage ratings do fall a little with current but for unrelated reasons. Any parameter with a peak has to be quoted with its conditions, and treating a headline figure as universal is how designs come to work only near one operating point.
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