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Alternating Current Motors (AC Motors)
Alternating Current Motors (AC Motors) AC motors are considered as a significant portion of the world's electric load. Nowadays, industrial and domestic usages of AC motors … According to principle of operation: Synchronous Motor Induction motor …
Multiplexing
… (FDM) Time-Division Multiplexing (TDM) Synchronous TDM A-Synchronous TDM These … the modulation and demodulation signals. The figure No.8.3 illustrates the FDM multiplexing process. The … in two ways: synchronous TDM and asynchronous TDM. 1. Synchronous TDM The multiplexer allocates …
Principle Of Operation Of Three-phase Induction Motor
… produced on these conductors tending to rotate them. Synchronous Speed The rotating speed of the stator … r.p.m. F = Supply frequency in cycles per second. P = No. of poles of stator. Rotor Speed The actual … Slip speed = 120fr / P Ns — N = 120fr / P --- (1) And S = (Ns — N ) / Ns Or Ns - N = …
Clamping Circuits
… changed, only there is vertical shift in the signal Fig. 1 shows the clamping wave form. Figure 1: Clamper … the circuit of negative clamper with positive bias. With no input signal the capacitor charges to the battery voltage … connections as shown in Fig 5(b) ASYNCHRONOUS AND SYNCHRONOUS CLAMPING Clamping circuit discussed above …
Three Phase Induction Motors
Three Phase Induction Motors 3 Phase induction motors are most widely … permanently short-circuited on themselves at the end. Hence no any extra resistance can be added to it. The slots of the … and is equal to Øm. the resultant vector rotates at synchronous speed. Three Phase Supply Consider a …
Shift Registers
… are often used to make a register. Each flip flop can store 1-bit of information and therefore for storing a n-bit word … of one of the flip flop forms in input to other, it is known as a shift register. The data in a shift register is … reset for the next shift operation. Asynchronous and Synchronous Shift Registers Asynchronous circuits …
Counters
… number of events occurring in a specified interval of time. Normally an electronic counter is used for counting the … other sequential logic circuits counters can be synchronous or asynchronous. As the name suggests, it … or decrease. A basic counter circuit is shown in Figure 1 using two triggered (T-type) flip flop stages. Each clock …
Flip Flops
… binary storage device. It can store binary bits either 0 or 1. It has two stable states HIGH and LOW i.e. 1 and 0. It … continuously disabling gate B so that any change in R has no effect. Also, the 1 state at Q is continuously … Q at 1. Consequently, when S returns to the 1 state it has no effect on the flip flop whereas a change in R will cause …
Decoder & Encoder
… 0 0 1 0.2 V 0 0 1 0 0.4 V 0 0 1 1 0.6 V …
SCR In Parallel
… to increase their common current capability. If SCRs are not perfectly matched, this results in an unequal sharing of current between them. Figure 1 shows the V-I characteristics of two SCRs, SCR 1 … gradual start-up and reduces inrush current in large motors and transformers. Battery chargers - Parallel …