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2.34. A load draws between 20 mA and 40 mA at a voltage of 20 VDC....
5000 10.2 S pts) The Zener diode in the circuit on the right voltage V 20 = 8.5V., and Zener resistancerz the circuit on the right has a Zener d) Find the Thevenin equivalent circuit as seen by lo b) Find the output voltage if a loa Find the output voltage if a load R, is connected and it draws a 1.5 mA current. Determine the value of RL c) How small can the load R, be, while ensuring that...
11) 20pts. The zener limiter circuit s V R often used as a low power voltage regulator for a DC power supply. This circuit is an example in load A) Find R so that the maximum power dissipated in the zener diode is Po for any possible value of Road given P, Vin and B) What is the maximum current that the load can draw before the zener stops regulating the voltage? C) When the circuit is regulating the voltage...
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A zener-diode voltage regulator circuit is shown below. The tage V 8.0V and the zener resistance is assumed to Problem 3: (20 points) zener diode has breakdown vol be 0 ohms. The power supply voltage Vps can vary between resistance RL can vary between 100 ohms and 1 kohm. 10V and 14V and the load Ri PS 1. Find a value of Ri such that the zener diode remains properly biased over the range of...
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1. Design a zener shunt regulator to provide a regulated voltage of about 10V. You can use a zener diode of type 1N4740 (such as the 1N4740A-ND sold at digikey.com) A voltage supply Vs with a nominal value of 20V 25% is available. The regulator is required to supply a load current of 0 mA to 20 mA. Design...
A common source amplifier circuit based on a single n-channel MOSFET is shown in Figure 4b. Assume that the transconductance gm-60 mS (equivalent to mA/ V) and drain source resistance, os, is so large it may be neglected. 0) Calculate the open circuit voltage gain Av Yout/ Vis. i) The amplifier has a load of 10 k2. Determine the current gain Va. = 12 V 150k 4k3 Vout Vin 200k GND = 0 V Figure 4b a) State the name...
Design a high efficiency 3.3 V, 5A d.c.to d.c. power converter from a 4 to 5.5 Vdc source. The maximum allowable inductor current ripple and output voltage ripple are 0.1A and 20 mV, respectively. Assume a switching frequency of 20 kHz.a) Design a suitable converter power circuit using a MOSFET switch, showing all calculation of inductor and capacitor values and drawing a circuit diagram of the final design including component values. Indicate the peak inverse voltage and forward current rating...
QUESTION 5 (15 points) a. You have a power supply which is a full-wave rectifier with a capacitor filter. It operates from the mains and provides an output of Voc-20 V with 20% ripple, when the load current is 2 A Calculate the maximum and minimum values of the output waveform of this power supply. b. Now you will design a series voltage regulator between the power supply described in part (a) and an electronic device operating at 12 VDC...
Question 3. Unregulated supply Rz IL Vin IR Ib (a) The circuit on the right shows a series regulator connected to the output of an unregulated power supply. The transistor has B =50, and a 6 volt Zener diode is used. When the load current, Il, is 1 amp the de input voltage from the unregulated supply, Vin, is 11 volt, VBE = 1 volt and the Zener diode current, Iz, is 20 mA. For these conditions, calculate Iz (i)...
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...
V1 = 20 V2 = 25
EXPERIMENT NO. 6 Thevenin & Norton Theorem Introduction Any linear network having a number of voltage, current sources and resistors can be replaced by a simple equivalent circuit consisting of a single voltage source in series with a resistance, where the value of the voltage source is equalto the open circuit voltage and the resistance is the equivalent resistance measuredbetweenthe open circuit terminals with all independent deactivated Objective To verify Thevenin's and Norton's theoremusing...