Cycloconverter Control of Induction Motor: Cycloconverter Control of Induction Motor allows variable frequency and variable voltage supply to be obtained from a fixed voltage and frequency ac supply. A half-wave…
Ward Leonard Method of Speed Control: Known after the name of its inventor Ward Leonard Method of Speed Control (1891), it consists of a separately excited generator feeding the dc…
Impatt Diode Working: IMPATT Diode Working is a combination of delay involved in generating avalanche current multiplication, together with delay due to transit time through a drift space, provides the…
Varactor Diode Operation and Characteristics: Varactor Diode Operation and Characteristics were first used in the early 1950s as simple voltage-variable capacitance and later for frequency modulation of oscillators. They thus…
Protection of Alternators and Transformers Articles: Balanced Earth Fault Protection : In small-size alternators, the neutral ends of the three-phase windings are often connected internally to a single terminal. Therefore,…
Optimal System Articles: Derivation of Transmission Loss Formula : Derivation of Transmission Loss Formula – An accurate method of obtaining a general formula for transmission loss has been given by…
Control Systems in Electronic Instrumentation Articles: Temperature Controls using an Analog Electronic Controller: A Temperature Controls scheme using an Analog Electronic Controller of Fig. 21.14 is as shown in Fig.…
Circuit Breakers Definition: A circuit breaker can make or break a circuit either manually or automatically under all conditions viz., no-load, full-load and short-circuit conditions. This characteristic of the Circuit…