3. Additional questions: a. In the first stage of the circuit in Figure 1, it ta
ID: 2081046 • Letter: 3
Question
3. Additional questions: a. In the first stage of the circuit in Figure 1, it takes some time to get a stabilized output Explain the reason. b. Find possible applications of cascaded circuits that consists of that is in Fig. 1 and Fig. 2, or Fig. 1 and Fig. 3. c. Discuss possible issues in application of the H-Bridge. a) What if the driving voltages at both branches of the H-Bridge have non-zero overlap value? b) What measures should be taken to power a motor using the circuit? d. Make any necessary comments you may have from the simulations and observations.Explanation / Answer
1. Constant current sources and constant voltage sources are used for a variety of purposes in analog integrated circuits. As used herein, "constant" means that the output of the source remains at a relatively constant direct current (d.c.) level, although the output levels of such sources can typically be adjusted ("set") with a control signal. Once set, the output of a constant current or voltage source may change with temperature (i.e. be "temperature dependent") or may be stable with temperature. In many applications, it is desirable to have a constant current or voltage source that does not vary in output as the temperature changes. However, for some applications, it is desirable to have a constant current or voltage source that has an output that is temperature dependent. Useful temperature dependencies include those that are proportional to absolute temperature (PTAT), and those that are complementary to absolute temperature (CTAT).
A temperature stabilized, constant fraction, voltage controlled current source comprising
a control stage responsive to a stable, d.c. input voltage, said control stage including a temperature dependent control resistor of a given resistor technology, and at least one control constant current source providing said control resistor with a control current, wherein said control constant current source includes a temperature dependent current source resistor based upon said given resistor technology such that said control current is similarly temperature dependent, and such that the temperature dependencies of said control current and said control resistor tend to cancel to provide a PTAT control voltage that is proportional to absolute temperature.
Possible applications of cascade crcuits of fig(1)and fig(2)
Cascaded multilevel inverters synthesize a medium-voltage output based on a series connection of power cells which use standard low-voltage component configurations. This characteristic allows one to achieve high-quality output voltages and input currents and also outstanding availability due to their intrinsic component redundancy. Due to these features, the cascaded multilevel inverter has been recognized as an important alternative in the medium-voltage inverter market. This paper presents a survey of different topologies, control strategies and modulation techniques used by these inverters. Regenerative and advanced topologies are also discussed. Applications where the mentioned features play a key role are shown. Finally, future developments are addressed.
The main advntges of chb
The advantages of CHB MLI configuration are [3]:
i. Staircase wave form quality which reduces electromagnetic compactibilty.
ii. Modularity of control can be achieved.
iii. Requires less number of components to achieve the same number of output voltage levels.
iv. Draws input current with low distortion.
Related Questions
drjack9650@gmail.com
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.