1. A step-down chopper is connected to a 150VDC source and a 3Ω resistive load. The...
1. A step-down chopper is connected to a 150VDC source and a 3Ω resistive load. The chopper switching frequency is 5kHz with a 60% duty-cycle (D) Average load voltage?
2, A step-down chopper is connected to a 150VDC source and a 3Ω resistive load. The chopper switching frequency is 5kHz with a 60% duty-cycle (D) Average load current ?
3. A step-down chopper is connected to a 150VDC source and a 3Ω resistive load. The chopper switching frequency is 5kHz with a 60% duty-cycle (D) Average source current?
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1. A step-down chopper is connected to a 150VDC source and a 3Ω
resistive load. The...
1. A step-down chopper is connected to a 90VDC source and a 3Ω resistive load. The...
1. A step-down chopper is connected to a 90VDC source and a 3Ω resistive load. The chopper switching frequency is 5kHz with a 40% duty-cycle (D) Average free-wheeling diode current 2. A step-down chopper is connected to a 90VDC source and a 3Ω resistive load. The chopper switching frequency is 5kHz with a 40% duty-cycle (D) Size of inductance for a 10% peak-to-peak current ripple 3. VS = 90V EMF = 40V R = 2Ω L = 10mH switching frequency = 5kHz...
a step down chopper (buck converter) is delivers power to 10 ohms resistive load from 120...
a step down chopper (buck converter) is delivers power to 10 ohms resistive load from 120 v dc source at a duty cycle of 75%. determine the average switch current
A chopper is supplied from a 240-V dc source. The load of the chopper con- sists...
A chopper is supplied from a 240-V dc source. The load of the chopper con- sists of a 20-2 resistance in series with a 10-mH inductance. The chopper operates with the switching frequency of 0.8 kHz and produces the load cur- rent of 4.8 A. Find: P6.1 (a) quadrant of operation of the chopper (b) duty ratio of the chopping switch (c) average output current
6. A buck-boost chopper supplies power to a load having 1.52resistance and 0.8mH inductance The source...
6. A buck-boost chopper supplies power to a load having 1.52resistance and 0.8mH inductance The source voltage is 50V DC and the load voltage is 75 V. If the on time is 1.5msec, find a. The chopper switching frequency b. Imax and Imin c. The average value of the input current d. The average value of the diode current e. The peak-peak ripple in the input current (8 Marks)
Q3 A MOSFET is used as a low-side switch to control a 15 2 resistive load...
Q3 A MOSFET is used as a low-side switch to control a 15 2 resistive load from a 24 V DC supply. The MOSFET has Rps,on = 0.2 and fon foff= 40 ns. [2] (a) Draw a suitable circuit. (b) Calculate both the drain current ip and drain-source voltage vps when the MOSFET is off and when it is on. [6] (c) Calculate the power dissipated in the load and in the MOSFET while they switched on. are [4] (d)...
A resistive load of R = 10Ω is to be connected to a 50Ω source, operating...
A resistive load of R = 10Ω is to be connected to a 50Ω source, operating at f = 103.1 MHz. Design a transmission line circuit connecting source and load for maximum power transfer. For your design, what is the reduction (in percent) in power dissipated in the load if the frequency is changed to f-91.5 MHz?
A six-step three-phase inverter has a 480 Vdc source and an output frequency of 60 Hz....
A six-step three-phase inverter has a 480 Vdc source and an output frequency of 60 Hz. Consider a balanced Y-connected resistive load of 16 ohm per phase. Determine the instantaneous source current, the total load power, and the rms line-line (Vab) and the line-neutral (Van) load voltage.
A PV array with terminal voltage around 48 V under standard conditions is connected to a step-up dc-dc converter to supply a load at 120 V, 5 A. The input inductance is 8 mH with an internal resistanc...
A PV array with terminal voltage around 48 V under standard conditions is connected to a step-up dc-dc converter to supply a load at 120 V, 5 A. The input inductance is 8 mH with an internal resistance of 0.2 ohms, and the switching frequency is 5 kHz. Assuming ideal circuit components, calculate the duty ratio (k) and average input current (I1). Evaluate the maximum peak-to-peak input current ripple for the converter. If this current is limited to 2% of...
a9a resistive load. Inductor 3-(35 pts) Design a converter that has an input voltage of 24 V DC and supplies 18 V DC to current is desired to be continuous and must not change more than 30 % of i...
a9a resistive load. Inductor 3-(35 pts) Design a converter that has an input voltage of 24 V DC and supplies 18 V DC to current is desired to be continuous and must not change more than 30 % of its average value voltage ripple must be lower than 2 %. Switching frequency is 10 kHz. a) Draw the circuit diagram. Calculate the duty ratio. Calculate values for 2 desired conditions of the inductor current and determine the value of the...
1- A three-pulse uncontrolled rectifier is connected to a 3 phase, 4 wire , 220 V...
1- A three-pulse uncontrolled rectifier is connected to a 3 phase, 4 wire , 220 V , 60 Hz source. If the load is resistive load R 20 2, Find: The maximum load voltage and current а- b- The average load voltage ,load current, and diode current The voltage and current rating of the diode с- Draw the waveforms of output voltage, output current, diodes current, d- and diodes voltage.
A chopper is supplied from a 240-V dc source. The load of the chopper con- sists of a 20-2 resistance in series with a 10-mH inductance. The chopper operates with the switching frequency of 0.8 kHz and produces the load cur- rent of 4.8 A. Find: P6.1 (a) quadrant of operation of the chopper (b) duty ratio of the chopping switch (c) average output current
6. A buck-boost chopper supplies power to a load having 1.52resistance and 0.8mH inductance The source voltage is 50V DC and the load voltage is 75 V. If the on time is 1.5msec, find a. The chopper switching frequency b. Imax and Imin c. The average value of the input current d. The average value of the diode current e. The peak-peak ripple in the input current (8 Marks)
Q3 A MOSFET is used as a low-side switch to control a 15 2 resistive load from a 24 V DC supply. The MOSFET has Rps,on = 0.2 and fon foff= 40 ns. [2] (a) Draw a suitable circuit. (b) Calculate both the drain current ip and drain-source voltage vps when the MOSFET is off and when it is on. [6] (c) Calculate the power dissipated in the load and in the MOSFET while they switched on. are [4] (d)...
A resistive load of R = 10Ω is to be connected to a 50Ω source, operating at f = 103.1 MHz. Design a transmission line circuit connecting source and load for maximum power transfer. For your design, what is the reduction (in percent) in power dissipated in the load if the frequency is changed to f-91.5 MHz?
a9a resistive load. Inductor 3-(35 pts) Design a converter that has an input voltage of 24 V DC and supplies 18 V DC to current is desired to be continuous and must not change more than 30 % of its average value voltage ripple must be lower than 2 %. Switching frequency is 10 kHz. a) Draw the circuit diagram. Calculate the duty ratio. Calculate values for 2 desired conditions of the inductor current and determine the value of the...
1- A three-pulse uncontrolled rectifier is connected to a 3 phase, 4 wire , 220 V , 60 Hz source. If the load is resistive load R 20 2, Find: The maximum load voltage and current а- b- The average load voltage ,load current, and diode current The voltage and current rating of the diode с- Draw the waveforms of output voltage, output current, diodes current, d- and diodes voltage.
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