Inductors презентация
Содержание
- 2. What do inductors do? Consider this circuit What will happen when
- 3. Why? As the current starts to flow through the inductor, a
- 4. Why? This opposing voltage restricts the current build-up in the circuit
- 5. Inductors Once the current has reached it’s full value, it is
- 6. Inductors The reverse happens when the current is switched off. A
- 7. Inductance The effect of an inductor in a circuit is measured
- 8. Inductance Faraday’s Law states:
- 9. Inductance So the size of the induced back EMF depends on
- 10. Changing Current When the switch is closed, current starts to flow
- 11. Changing Current
- 12. Time Constant The time constant is defined as the time
- 13. Time Constant The time constant depends on: The size of the
- 14. Back E.M.F The back e.m.f will be large to begin with
- 15. Energy Energy is stored in the magnetic field around the inductor.
- 16. Transformers These consist of 2 coils wound close to each other.
- 17. Transformers The ratio of the windings determines how much voltage/current is
- 18. Transformers No transformer is 100% efficient, but assuming it was: Power
- 19. Transformers 3 Types: Step up : Vs > Vp Step
- 20. Скачать презентацию
Слайды и текст этой презентации