For the Zener diode network of the circuit, determine VL, VR, Iz and Pz. + Vp-...
2. Sketch a zener diode circuit with above FWR, and Vz-9v, Izk-0.1mA, and IzM 50mA, assume ideal zener diode with ZZF0Ω. For zener diode maintaining regulation, Calculate: a. Rs minimum b. RL, minimum c. For RL=120Ω, determine VL and IL, is the Zener diode in the Zener mode? d. Pz (15) 2Vrms F 2002 2. Sketch a zener diode circuit with above FWR, and Vz 9v, Izk-0.1mA, and IzM 50mA, assume ideal zener diode with ZZF0Ω. For zener diode maintaining...
2.19 Consider the circuit shown in Figure P2.19. The Zener diode voltage is Vz = 3.9 V and the Zener diode incremental resistance is ra = 0. (a) Deter- mine Iz, Il, and the power dissipated in the diode. (b) Repeat part (a) if the 4 k 32 load resistor is increased to 10 KS2. 12 k22 " 1112 vz$ 111 462 20 v= Figure P2.19
The circuit above is a Zener voltage regulator using D1N750 zener diode with Vz=4.7V: 1. Calculate the minimum value of E in order to have the voltage across RL regulated VL=Vz 2. Using Orcad PSpice schematics, simulate the circuit using bias point and find Iz, IL, Is and Vz (the circuit must have all voltages and currents values shown). 3. Using Orcad PSpice schematics, use DC sweep to vary RL from 200 ohm to 1000 ohm and plot VL (for...
The zener diode in the circuit below has voltage Vzo = 5V, Iz = 0. It is modeled as a 0.7V drop in the forward direction. a) Determine the value of resistor R, that would result in a DC current 10 = 1 mA. b) Determine the DC output voltage V c) The circuit is subjected to a +-7V square wave as shown below. Capacitor Cis chosen such that at the square wave frequencies it acts as a short circuit....
(a) The following circuit shows a linear voltage regulator. Assuming the zener diode has specifications (VZ = 2.5 V, IZ = 60 mA), select adequate resistor values to provide a regulated output voltage Vo = 10 V from an unregulated voltage Vi = 15V. (b) Calculate the power efficiency of the regulator when a load RL = 10Ω is connected to the regulator output. (c) Briefly explain the terms “dropout”, “line regulation”, and “load regulation”, as they apply to voltage...
Problem 2 a. Determine V.1.1, and le for the network Fig. 2.181 if R2 = 180 . b. Repeat part (a) if R, 470 . c. Determine the value of R, that will establish maximum power conditions for the Zener diode. d. Determine the minimum value of R, to ensure that the Zener diode is in the "on" state. 220 22 20 V V2 = 10 V Pz.. = 400 mW FIG. 2.181
Iz(max) 1 (max).IVes(max)-vzl-Ic(min) [Vps(min)-Vz] Vps(min)-0.90 z-0.1V ps(max) for Iz(min) = 0.11z(max) Vps (max) -V, R Iz(max)+1(min) R. • A Zener diode is connected in a voltage w + regulator circuit as shown in the Figure. The Zener voltage is Vz = 9V. V VZ • Determine the value of Ri such that the Zener diode remains in break down in the following two situations: If the load current varies from I = 50 to 500 mA and If the input...
Ctri Question 3 (20 Marks) Lab 1-Zener Circuits and Applications Theory: Zener diode is designed to operate in reverse conduction. Zener breakdown occurs at a precisely defined voltage, allowing the diode to be used as a voltage reference or clipper. While Zener diodes are usually operated in reverse conduction, they may also be operated in cutoff and forward conduction. There are two different effects that are used in "Zener diodes". The only practical difference is that the two types have...
b) For the circuit shown in Figure Q1(b) below, the voltage source is 18 V. Determine Vo, Voz and /. [CO2/PO3/C4] (10 marks) Vo1 0.47 k 1 ka Vo2 Si 18 V Si Figure Q1(b) For the circuit shown in Figure Q1(b) below, the voltage source is 18 V. Determine b) Vot, Voz and / [CO2/PO3/C4] (10 marks) Vof 1 ka 0.47 kn Vo2 ZSI 18 V Figure Q1(b) ) Figure Q1(c) shows a basic voltage regulator circuit. Determine Vi,...
Problem 3: (20 points) A zener-diode voltage regulator circuit is shown belkw zener diode has breakdown voltage Vz 8.0V and the zener resistance is nsumed to be 0 ohms. The power supply voltage Vps can vary between 10V and 14V and the lod resistance Ri can vary between 100 ohms and 1 kohm, 圧 1. Find a value of R such that the zener diode remains properly biased over the range of variation of Vps and RI (hint: the minimum...