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Smoothing Circuits

Smoothing Circuits: The rectified a.c. consists of a series of undirectional half waves of current or voltage. It is generally desirable to smooth this output. The various filters used for…

Half and Full Wave Rectifier Circuits

Half and Full Wave Rectifier Circuits: Half and Full Wave Rectifier Circuits for producing high d.c. voltages from a.c. sources may be (a) Half wave, (b) Full wave, or (c) Voltage…

Basic Components of Static Relays Articles

Basic Components of Static Relays Articles Semiconductor Diodes in Static Relays: The pn junction has rectifying characteristics as shown in Fig. (10.1). If a source of emf is connected to…

Power System Protection and Switchgear Articles

Power System Protection and Switchgear Articles: This Power System Protection and Switchgear Articles which includes the following topics: Basic Ideas of Protection Relay Fault Meaning Zone Protection Essential Qualities of…

Power Converters Articles

Power Converters Articles: What is a Power Converter? Solid-state power converter are employed for obtaining the appropriate form of electrical energy such as direct current or adjustable-frequency alternating current (required…

Systems of Track Electrification AC Electrification System

Systems of Track Electrification AC Electrification System: As even in single phase electrification, the substations are necessarily required to keep the voltage drop within permissible limits. The type of substations…

Systems of Track Electrification DC Electrification System

Systems of Track Electrification DC Electrification System: The substations are necessary for control of electric supply to a considerably long network in systems of track electrification DC electrification system. DC…

Three Phase Rectifiers

Three Phase Rectifiers: Three-Phase Half-Wave Rectifier : Figure 9.11 illustrates a circuit for a 3-phase half-wave rectifier. The three diodes are connected to the three phases of a 3-phase transformer…