Lab Report 3

H.W: Determine Vo and ID for the circuit in figure below after adding a resistance of 2kQ in series with both diodes +20 V Si St 4.7 ks2

Challenging Diodes problem I'm stuck on: In the circuit below, Vz = Vz0 = 5 v. rz = 0 and Iz,min = 0. What is the current through the diode, voltage drop measured V1 and is the diode on in each case? a) Vin = -5  b) Vin = 5  c) Vin = 15

Determine the minimum and the maximum input voltages that can be regulated by the Zener diode shown in figure 5. From data sheet the Zener diode has the following values: Vz=9.5 V at IZ1=65 mA, IzK =5.5 mA, PDmaxN)=1.25 W, and Z, = 15 N . R Vout 650 Q Vin 4 Vz Figure 5

Determine which diodes are forward-biased and which are reverse-biased in the configurations shown in Figure 4. Assuming a 0.7-V drop across each forward-biased diode, determine the output voltage. O+5 V -10 V R DI +s vOK D, -SVOKH D3 +s vOK D4 -5 voK DI -5VOK Dz OVout OVout +5 voK Figure 4.

Consider the Zener diode circuit shown in Figure. The Zener Breakdown Voltage (Vz) is 5.6 V at Iz= 0.1mA. Zener resistance is rz= 10 0. What is Vo without load (RL= ) ? R= 0.5 ko Vo R Vps= 10 V

In the circuit shown in the figure; B) When RL = 1Kohm and capacitor C is deactivated, draw VA and V0 in scale according to input voltage Vs. NOTE = diodes are ideal

Determine the minimum and the maximum input voltages that can be regulated by the Zener diode shown in figure 5. From data sheet the Zener diode has the following values: Vz -9.5 V at IzT =65 mA, IZK =5.5 mA, PDumax)= 1.25 W, and Zz 15 Q. Vout 650 Q Vin AVz Figure 5

B. For the circuit shown below, assume that the zener diode has Vz-3.3V and rz=092 when reverse biased, and has a 0.7V drop when forward biased. Fill the following table for values of Vo for different values of input voltage Vi. R1 Vi Vi -8V OV 8V 1k 5V N V2 R21k Vo Vo

Consider the following circuit: VI R₁ = 4kQ2 IDI R₂ = 8 ΚΩ D₁ ID2 R3 = 6 ΚΩ D2 ID3 + 1.0 V - VO R4= 4 ΚΩ D3 + 2.0 V Figure 1: Diode circuit for the Question Please find Ip1, ID2, IDs and to using constant voltage drop model for diodes. UF 0.7 V. v1 = 3V.

After replacing R5 with diode IN4007 (switch K3 to diode side) .What conclusion can you draw from analysis of this step ?

In the Figure as shown below the current (I) will be equal to: ---- Assume that all diodes are silicon -practical diode model 4 KUZ lovt 32 KSL 2.2 mA O 2.3 mA O 2.4 mA O 1.1 mA O

In the circuit shown in the figure; A) When RL = 5Kohm and capacitor C is switched on, draw VA and V0 in scale according to input voltage Vs. NOTE = diodes are ideal

Q4) Determine and sketch the output voltage across the load resistor (RL) for the circuit shown below. (assume Si diodes) V_DC 0.75 0.25 V_SIN Y SIN as RL -1 v SOR V_SQR 0.75 -0.75 V_TRI V TRI as

Power supply circuit is delivering 0.5 A and an average voltage 20 V to the load as shown in the circuit below. The ripple voltage of the half wave rectifier is 0.5 V and the diode is represented using constant voltage model. The smoothing capacitor value is equal to 220V ams 5OHZ İL-DC =05A RL VL-DC =20V

In Figure-1 (a and b), calculate the load current, load voltage, load power, diode power, and total power using 3d approximation if Rp 802 and diode current is 10 mA. Note please solve within 30 minutes.avoid plagiarism

For the following bridge rectifier circuit, assume Vm = 5 V. Analyze the circuit and plot the waveshape Vo (t) as a function of time for one full cycle. Show all supporting circuit diagrams as required. Compute Vde (V). The diodes are ideal diodes. Võ Vm The PI D2 Vo - Vm 2. 2h2 2-22 (2.2ks) 2.212

Power supply circuit is delivering 0.5 A and an average voltage 20 V to the load as shown in the circuit below. The ripple voltage of the half wave rectifier is 0.5 V and the diode is represented using constant voltage model. The smoothing capacitor value is equal to IL-DC =0:5A RL VL-DC =20V 220V omsb O 001 F O 0.02 F O 0.0167F O None of the above Activate

6:1 D3 Vin RL D4 50 Hz D2 560 2 Figure 2 (b) The full-wave bridge rectifier in Figure 2 has 170 V ms sinusoidal input at the primary circuit. Di, D2, Ds and D4 are practical Si diodes and each has barrier potential (V3) of 0.7 V. (1) Determine Vplin), Vpígri, Vplcec) and VpRL). (ii) Draw waveforms for Vn, Veri, Vze and Vau for TWO (2) complete input cycles. (ii) Calculate Vavo and peak inverse voltage (PIV). (iv) Calculate the maximum current flowing through each diode. lle

Q3) For the circuit in figure(2) find the current and the voltage for (1k Ohm, 2k Ohm, 3k Ohm) and the voltage on each diode where each diodes are Ge-type: D1 D4 1k Ohm D2 D5 -21 V 2k Ohm D6 -14 V 12V 3k Ohm

As shown is a positive parallel clipper circuit which has an input voltage of E=t5V. The negative output voltage is to be -4.5V when lo is 5mA. Assume ideal diode model approximation. Determine the value of R1 in ohms. Note: Write only the numeric value of the answer, round to 4 decimal places. No need to include the unit. R, +E ww Output Input D, -E -(E-1,R,)

In the circuit shown in the figure, draw vx and v0 with a scale according to the input voltages. note = R1 = 10Kohm R2 = 1kohm R3 = 1Kohm, threshold voltages of diodes shall be VE = 0.7V.

2-3 DIODE MODELS 1. Determine whether each silicon diode in the figure is forward-biased or reverse-biased. 2. Determine the voltage across each diode in figure, assuming the practical model. 3. Determine the voltage across each diode in figure, assuming an ideal diode. 4. Determine the voltage across each diode in figure, using the complete diode model with r'a= 102 and r'R = 1002. 100 V + 10 Ω 5 V 560 N 8 V (a) (b) 10 kN 10 kN 1.0 kM 1.5 kN 4.7 kN 30 V 10 V 20 V 4.7 kN (c) (d)

In the figure below, calculate the following (use the second diode approximation): Np: N₂ 6:1 Vp 120 Vac 60 Hz (a) Vs (b) Vout(pk) (c) Vdc rü D₁ D₂ Vout R₁-2000) (d) IL (e) PIV of the diodes (f) fout

Consider the same circuit again. Vz= 4V. 10V 6V R2 R3 + V R1 R R1 = 10k2 and R2 = R3 = 6kQ. Guess that the diode is OFF. What is the minimum value of R that causes the diode to be in Zener breakdown? Enter your answer in kQ rounded to one decimal place. Hint: Guess that the diode is OFF, determine Va and Vb, then check the conditions for the diode not to be in Zener breakdown.

Draw the input waveform and output waveform for the circuit given below with proper values marked in the figure. Assume D1 as germanium and D2 as silicon diodes. Input Vpp=20V, V1=5 v and V2=8 V. R DZ D1 Vin Vout V2 Maximum voltage of output waveform Minimum voltage of output waveform Windows hui