Basic electronics #6(2010)
- 1. Basic Electronics Lecture #6 Company LOGO © 2010 B. Bat-Otgon Transistors Ch.6 1947 FIRST POINT CONTACT TRANSISTOR John Bardeen, Walter Brattain and William Shockley
- 2. Bipolar transistors Ch.6 BIPOLAR TRANSISTOR C – Collector E – Emitter B–B Base VBE≈0.7V VBC ≈0.6V rBE > rBC A. NPN, Б. PNP Bipolar transistors Ch.6 TRANSISTOR GHOST
- 3. Bipolar transistors Ch.6 POWER DISSIPATION AND LIMITS Bipolar transistors Ch.6 WORKING MODES S – Saturation point (Ханалтын цэг), C – Cutoff point (Хэрчилтийн цэг), Q – Active point (Идэвхитэй цэг)
- 4. Reminder… Ch.5 ZENER DIODE VLIM VUR=13 5V =13.5V RLIM VREG VREG=5V VUR IL=0.35A IT IZ IL RL IT = I Z + I L D VZ=5.1V IZ=0.4A V LIM VUR − V Z R LIM = = IT IZ + IL RLIM=? Mobile phone charger from car battery PL = 5.1V ⋅ 0.35 A = 1.79W 13 .5V − 5.1V 8.4V R LIM = = = 11 .2Ω 0.35 A + 0.4 A 0.75 A PZ = 5.1V ⋅ 0.4 A = 2.04W PRLIM = 8.4V ⋅ 0.75 A = 6.3W PL Eff = ff 100 % = 21 .4% PZ + PRLIM Use of transistors Ch.6 CURRENT OR POWER AMPLIFIER QUIZ: VUR=12V: PT1=? (7V·4A=28W)
- 5. Use of transistors Ch.6 EMITTER FOLLOWER V E = V B − 0 .6V ΔV E = ΔVB V IN = VOUT Use of transistors Ch.6 CURRENT SOURCE
- 6. Use of transistors Ch.6 CURRENT SOURCE Use of transistors Ch.6 TRANSISTOR AMPLIFIER RC → ∞ ; R E → 0 ⇒ K → ∞ ?
- 7. Use of transistors Ch.6 TRANSISTOR AMPLIFIER Use of transistors Ch.6 CURRENT MIRROR
- 8. Use of transistors Ch.6 COMPLEMENTARY PAIRS – PUSH PULL FOLLOWER ! Use of transistors Ch.6 DARLINGTON AND SZIKLAI PAIRS Дарлингтон хосын хурдыг сааруулагч празит багтаамж ба түүнийг эсэргүүцэгчээр дарах
- 9. Use of transistors Ch.6 DIFFERENTIAL AMPLIFIER Non-Inverting Input Inverting Input Use of transistors Ch.6 2N3904
- 10. ! Төслийн сэдэв: 03/27 •Группын гишүүдийн нэрстэй хураалга! Company LOGO ! Гэрийн даалгавар (Бүл.6): Next week!