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RANGAKAIAN DIODA Hamzah Afandi, Antonius Irianto dan Betty Savitri Sources: Millman, Jacob, Grabel, Arvin, Microelectronics, Mc. Graw Hill Int. Ed., 1994.

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Presentation on theme: "RANGAKAIAN DIODA Hamzah Afandi, Antonius Irianto dan Betty Savitri Sources: Millman, Jacob, Grabel, Arvin, Microelectronics, Mc. Graw Hill Int. Ed., 1994."— Presentation transcript:

1 RANGAKAIAN DIODA Hamzah Afandi, Antonius Irianto dan Betty Savitri Sources: Millman, Jacob, Grabel, Arvin, Microelectronics, Mc. Graw Hill Int. Ed., Robert Boylestad, Louis Nashelsky Sixth Edition; Prentice Hall,1997

2 Review: p-n Junction Volt-Ampere Characteristic of Diode = type of semiconductor factor ( for Si = 2, Ge = 1 ) V T = Volt-Equivalent of Temperature = 25 mV (at 293 o K) VDVD IDID ISIS VZVZ V ( for Si) ( for Ge)

3 Review: p-n Junction Load-line Concept VDVD IDID I DQ V DQ V AA R Quiscent Point VDVD + _ IDID + _ V AA R

4 Analysis of Diode Circuit: Ideal Diode Approach VDVD IDID VDVD + _ IDID Forward/ActiveReverse A K A K A K A K A K

5 Simple diode circuit analysis Diode Circuit: +5V 1K +9V 10K -9V 1K -5V 10K (a)(b) (c) (d)

6 Simple diode circuit analysis Diode Circuit: +10V 2K 4K 6K R1R1 R2R2 R3R3 R4R4 D Q: V 12 = ….. ? (D = ON/OFF ?) V1V1 V2V2 Diode is CORRECTLY OFF! Assumption that Diode is OFF

7 A LOGIC GATE Diode Circuit: +5V RSRS RLRL D1D1 VIVI VOVO +6V 0V VIVI VOVO +6V +5V 0V 0V

8 VAVA VBVB +6V A LOGIC GATE Diode Circuit: +5V RSRS RLRL D1D1 VOVO VBVB VOVO +6V +6V +5V D2D2 VAVA 0V +6V 0V +6V 0V 0V 0V 0V 0V

9 Clipping Circuit Diode Circuit: + 10V R1R1 D 20V Vi 20V Vo 10V

10 Clipping Circuit Diode Circuit: + 10V R1R1 D 20V Vi 20V Vo -10V

11 Clipping Circuit Diode Circuit: + 10V R1R1 D1D1 20V Vi 10V D2D2 20V Vo 10V -10V

12 Diodes as Rectifiers (Half Wave Rect.) Diode Circuit: RLRL D Vo

13 Diodes as Rectifiers (Full Wave Rect.) Diode Circuit: RLRL D1D1 Vo D2D2

14 Diodes as Rectifiers (Full Wave Rect.) Diode Circuit: Vo D1D1 D2D2 D3D3 D4D4 RLRL

15 Diodes as Rectifiers (Full Wave Rect. + Filter) Diode Circuit: Vo D1D1 D2D2 D3D3 D4D4 RLRL C

16 Diodes as Rectifiers (Voltage Regulator Concept) Diode Circuit: V r = Ripple Voltage (RMS), V DC = DC Output Voltage V NL = DC Voltage at no-load V FL = DC Voltage at full-load

17 Peak Detectors Diode Circuit: R D C Vi VOVO

18 AM Demodulator Diode Circuit: R D C Vi Vo

19 Voltage Doubler Diode Circuit: D2D2 C1C1 D1D1 C2C2 + V SP Vi V O = 2 V SP 2V SP + _ + _

20 Switching Flyback Diode Circuit: +Vs i = 0 + _ v +Vs i + _ v C + _ V SW t VCVC t SW D LLL

21 Flyback Prevention Diode Circuit: +Vs + _ i + _ i SW D L D L

22 Analysis of Diode Circuits: Large-Signal Model (Piecewise Linear Approach) VDVD IDID ISIS VZVZ V 1/R f I D =(V D -V )/R F 1/R r I D =(V D /R R ) - I S

23 Analysis of Diode Circuits: Large-Signal Model (Piecewise Linear) RfRf Forward-Biased Diode (On) Reversed-Biased Diode (Off) V RrRr ISIS I D =(V D -V )/R F I D =(V D /R R ) - I S A KK A K A K A K

24 Analysis of Diode Circuits: Characteristic Transfer Curve Method + 10V R1R1 D 20V Vi 20V Vo 10V vivi vovo 1/Rr 1/Rf

25 Analysis of Diode Circuits: Using PWL & Characteristic Transfer Curve Solve For: + 5V 5K D1D1 D2D2 5V vOvO 5K t vivi

26 CALCULATION EXAMPLES Given in class


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