A 5.0v stabilizer powersupply is required from a 12v d.c, input which uses a stabilising resistorof...
A 5.0v stabilizer powersupply is required from a 12v d.c, input which uses a stabilising resistorof 1kkohms. The maximum poer ratingof the zener diodeis 2w. If the load resistor of 1kohms is connected accros the zener diode.draw the circult diagram and calculate the maximum current flowing in the zener diode, the load current, the total supply current
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A 5.0v stabilizer powersupply is required from a 12v d.c, input
which uses a stabilising resistorof...
Question 1 220 Vrms 50 Hz 10:1 CR Figure 1 Figure 1 shows the circuit diagram...
Question 1 220 Vrms 50 Hz 10:1 CR Figure 1 Figure 1 shows the circuit diagram for a simple d.c. power supply. a. Identify the type of rectifier circuit represented in figure I and explain the operation of the circuit with reference to the function of each component within the circuit. b. Sketch to scale the voltage across R as a function of time showing its relationship to the secondary voltage from the transformer. Question 2 A 5.0V stabilized power...
1. to design a high efficiency d.c. to d.c. power converter with the given specifications Input v...
1. to design a high efficiency d.c. to d.c. power converter with the given specifications Input voltage Output voltage Nominal load current: 4A Inductor current ripple: 0.1A max Switching frequency: 30 kHz Output voltage ripple: 20 mV min 10V max 15V nominal (regulated) 8V Define a suitable power circuit topology to meet the above specification Sketch a circuit diagram of the chosen power circuit topology (a) Define the minimum and maximum duty cycles assuming that the control circuit keeps the...
There are two questions but the one I need answered is the second one, which uses...
There are two questions but the one I need answered is the
second one, which uses the first one as reference.
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...
To design a high efficiency d.c., to d.c power converter with the given specifications min 10V max 15V nominal (regulated) 8V Input voltage: Output voltage: Nominal load current: 4A Inductor current...
To design a high efficiency d.c., to d.c power converter with the given specifications min 10V max 15V nominal (regulated) 8V Input voltage: Output voltage: Nominal load current: 4A Inductor current ripple: 0.1A max Switching frequency: 30 kHz Output voltage ripple: 20 mV Define a suitable power circuit topology to meet the above specification? Sketch a circuit diagram of the chosen power circuit topology (a) Define the minimum and maximum duty cycles assuming that the control circuit keeps the output...
It is required to use a FULL-wave rectifier to design a dc power supply that provides...
It is required to use a FULL-wave rectifier to design a dc power supply that provides an average dc output voltage of 15 V. A maximum ripple voltage of ±1 V is allowed on the output voltage. The output voltage will feed a load resistance of 250 Ω. Assume a sinusoidal input voltage with the frequency of 60 Hz. Do not include a Zener diode in your design. (Assume V_D0)* = 0.7 V). a) Draw the circuit diagram. b) Calculate...
If the load reactance is now changed to a very large series inductance, calculate the firing angle required to achieve a DC output load current of 20A. with rload =10ohm and 1.76ohm reactance connect...
If the load reactance is now changed to a very large series
inductance, calculate the
firing angle required to achieve a DC output load current of
20A.
with rload =10ohm and 1.76ohm reactance connected to it
Question 2 (20 Marks): A 3-phase SCR bridge feeds a load comprising a 10Ω resistor and 1.7662 reactance connected in series, from a 3-phase 415V, 50Hz AC supply. a) For a firing angle of a (i.e. diode operation), calculate the average DC output (6...
Question 3. Unregulated supply Rz IL Vin IR Ib (a) The circuit on the right shows...
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)...
A full-wave diode rectifier supplies a 30Ω resistive load from a 400Hz, 110V single-phase AC supply....
A full-wave diode rectifier supplies a 30Ω resistive load from a 400Hz, 110V single-phase AC supply. A capacitor is connected in parallel with the load. Calculate the capacitance required if the maximum peak-to-peak voltage ripple across the resistor is to be restricted to 10V. You may assume that the RC product of the resistance and capacitance will be significantly greater than the period of the AC waveform. State any other assumptions made.
Capacitor is connected to secondary (1) A fullwave bridge rectifier power supply is powered from the secondary of a transformer which has a peak secondary voltage of 22V. The primary of the transforme...
Capacitor
is connected to secondary
(1) A fullwave bridge rectifier power supply is powered from the secondary of a transformer which has a peak secondary voltage of 22V. The primary of the transformer is connected to a 50Hz, 230Vus power supply. A 2700μF filter capacitor is used. A current of 1.5 Amp is drawn from the supply (i) Sketch a schematic diagram of the setup (ii) Calculate the mean dc output voltage (ii) Assume that each diode conducts for one-twelfth...
A buck converter is used to have low output voltage from the high input source to...
A buck converter is used to have low output voltage from the high input source to low output voltage. The estimated power output is at 25 kW with the switching frequency of 25 kHz. Design the buck converter as by finding and following specifications consider the ripple of the output is set at 1% (i) Calculate the duty ratio of the buck converter (1 mark) (ii) Determine the minimum requirement for the inductor and the capacitor (5 marks) (iii) Determine...
Question 1 220 Vrms 50 Hz 10:1 CR Figure 1 Figure 1 shows the circuit diagram for a simple d.c. power supply. a. Identify the type of rectifier circuit represented in figure I and explain the operation of the circuit with reference to the function of each component within the circuit. b. Sketch to scale the voltage across R as a function of time showing its relationship to the secondary voltage from the transformer. Question 2 A 5.0V stabilized power...
1. to design a high efficiency d.c. to d.c. power converter with the given specifications Input voltage Output voltage Nominal load current: 4A Inductor current ripple: 0.1A max Switching frequency: 30 kHz Output voltage ripple: 20 mV min 10V max 15V nominal (regulated) 8V Define a suitable power circuit topology to meet the above specification Sketch a circuit diagram of the chosen power circuit topology (a) Define the minimum and maximum duty cycles assuming that the control circuit keeps the...
There are two questions but the one I need answered is the
second one, which uses the first one as reference.
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...
To design a high efficiency d.c., to d.c power converter with the given specifications min 10V max 15V nominal (regulated) 8V Input voltage: Output voltage: Nominal load current: 4A Inductor current ripple: 0.1A max Switching frequency: 30 kHz Output voltage ripple: 20 mV Define a suitable power circuit topology to meet the above specification? Sketch a circuit diagram of the chosen power circuit topology (a) Define the minimum and maximum duty cycles assuming that the control circuit keeps the output...
If the load reactance is now changed to a very large series
inductance, calculate the
firing angle required to achieve a DC output load current of
20A.
with rload =10ohm and 1.76ohm reactance connected to it
Question 2 (20 Marks): A 3-phase SCR bridge feeds a load comprising a 10Ω resistor and 1.7662 reactance connected in series, from a 3-phase 415V, 50Hz AC supply. a) For a firing angle of a (i.e. diode operation), calculate the average DC output (6...
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)...
Capacitor
is connected to secondary
(1) A fullwave bridge rectifier power supply is powered from the secondary of a transformer which has a peak secondary voltage of 22V. The primary of the transformer is connected to a 50Hz, 230Vus power supply. A 2700μF filter capacitor is used. A current of 1.5 Amp is drawn from the supply (i) Sketch a schematic diagram of the setup (ii) Calculate the mean dc output voltage (ii) Assume that each diode conducts for one-twelfth...
A buck converter is used to have low output voltage from the high input source to low output voltage. The estimated power output is at 25 kW with the switching frequency of 25 kHz. Design the buck converter as by finding and following specifications consider the ripple of the output is set at 1% (i) Calculate the duty ratio of the buck converter (1 mark) (ii) Determine the minimum requirement for the inductor and the capacitor (5 marks) (iii) Determine...
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