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DC chopper
This is one stage conversion device which is used for direct conversion of fixed de voltage at a level to an adjustable dc voltage at another level.
Figure DC Chopper
Chopper is high speed on/ off semiconductor switch is represented by a switch SW with an arrow as shown no current will flow if the switch is off and when it is on current will flow in the direction of arrow only.
What are the Steps concerned to fetch a byte in 8085 The PC places the 16-bit memory address on the address bus The control unit sends the control signal RD to enable
Determine the maximum power: 1 For the circuit shown below, what value of RL will result in maximum power transfer? Determine the maximum power dissipated in RL. You
Q. Sketch g m versus v GS for a JFET with I DSS = 10 mA, V P = 3V, V A = 100 V, and v DS = 10 V. See what happens if V A →∞. Also sketch r o versus v GS .
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what is FPGA ..
1. Work out the voltage for the following arrangement of 1.5V cells : (to achieve a pass grade, solve problems with cells in series, parallel and series-parallel) 2.
Q. A shift register can be used as a binary (a) divide by-2, and (b) multiply-by-2 counter. Explain. Show a block diagram of a 4-bit shift-right register using JKFFs.
Define Johnson Counters to Produce a Time Delay? The "serial in-serial out" shift register can be used as a time delay device. The amount of delay able to be controlled by:
Q. Cause of sparking at the brushes of a DC Motor? Ans: Sparking at the brushes can be occur due to poor quality of carbon brushes, loose connection, poor armature of carbon
Applications of Semiconductors Integrated circuits (ICs) SSI, MSI, LSI, and VLSI. Fluorescent materials used in TV screens II-VI (ZnS). Light detectors InSb, CdSe, Pb
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