Double Differentiation – Derivation: Two R-C coupling networks in cascade separated by an amplifier A is shown in Fig. 29.36 (a). The amplifier A is to operate as a linear amplifier and the output impedance must be small with respect to the impedance of R2 and C2 so that this combination does not load the amplifier. …
RC Low Pass Circuit as Integrator: RC Low Pass Circuit as Integrator – A circuit that gives an output voltage directly proportional to the integral of its input is known as integrating circuit. Figure 29.18 shows a typical integrating circuit. The output voltage across capacitor C will be the integral of the input voltage. It …
Low Pass RC Circuit Diagram, Derivation and Application: The Low Pass RC Circuit is shown in Fig. 29.18. In a Low Pass RC Circuit, the output voltage vout is taken across the capacitor. Resistance offers fixed opposition. Since the reactance offered by the capacitor C falls with the increase in frequency, low frequency signal develops across …
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RC High Pass Circuit as Differentiator: RC High Pass Circuit as Differentiator – A circuit that gives an output voltage proportional to the derivative of its input, is known as a Differentiator circuit. Figure 29.1 shows a typical RC High Pass Circuit as Differentiator. The output voltage across R will be the derivative of the input …
High Pass RC Circuit Diagram, Derivation and Application: The High Pass RC Circuit is shown in Fig. 29.1. The reactance of the capacitor is given as i.e., Reactance XC of the circuit capacitor decreases with the increase in frequency. Thus at low frequencies the capacitor C offers considerable reactance and so blocks them, but at …
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Single Phase Full Bridge Inverter: The main drawback of half-bridge inverter is that it requires 3-wire dc supply. This difficulty can, however, be overcome by using a single phase full bridge inverter shown in Fig. 27.39 (a). It consists of four thyristors and four diodes. In this inverter, number of thyristors and diodes is twice …
Inverter – Definition and Classification of Inverters: A device that converts dc power into ac power at desired output voltage and frequency is known as an inverter. Some industrial applications of inverters are for adjustable-speed ac drives, induction heating, standby aircraft power supplies. The dc power input to the inverter may be battery, fuel cells, …
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Three Phase Cycloconverter Circuit Diagram and its Workings: A cycloconverter converts ac at one frequency to an ac of another frequency. Cycloconverters can be classified as single-phase to single-phase, three-phase to single-phase and three-phase to 3-phase devices. They can also be classed as step-up and step-down cycloconverters. A step-up cycloconverter provides an output whose frequency …
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AC Regulator – Definition and Classification: An ac regulator converts a constant ac voltage into a variable ac voltage of the same frequency. No doubt, ac voltage level can be changed by auto-transformer, tap-changing transformer, saturable reactors etc. These devices have been in use for long time and still are in use. But ac regulators …
Step Down Chopper with R-L-Eb Load: The choppers are widely employed for speed control of dc motors in industrial and traction drives. Figure 27.30 (a) shows the basic Step Down Chopper with R-L-Eb Load for the control of a dc series motor. The chopper is shown to consist of a force-commutated thyristor, it could well …