Comparison of Different Biasing Circuits: The Comparison of Different Biasing Circuits of the three basic bias circuits, it must be recalled that transistor manufacturers specify maximum and minimum hFEÂ values for…
Collector to Base Bias Circuit: The Collector to Base Bias Circuit shown in Fig. 5-17(a) has the base resistor (RB) connected between the transistor collector and base terminals. As will…
Base Bias in BJT: Circuit Operation and Analysis - The transistor bias arrangement shown in Fig. 5-12 is known as Base Bias in BJT and also as fixed current bias.…
DC Load Line of BJT Biasing Circuit: The DC Load Line of BJT Biasing Circuit is a straight line drawn on the transistor output characteristics. For a common-emitter (CE) circuit,…
DC Motor Drives Articles: Types of DC Motor: The commonly used Types of DC Motor are shown in Fig. 5.1. In a separately excited motor, the field and armature voltages…
Interlocking Components in Electrical Drives: Sensing of signals required for speed and current control loops. Sequencing and interlocking operations are explained in the previous section, whereas this section discusses components…
PWM VSI Induction Motor Drive: PWM VSI Induction Motor Drive for traction is shown in Fig. 10.21. A pulsewidth modulated voltage source inverter converts dc into variable frequency and variable…
DC Traction using Semiconductor Chopper Controlled DC Motors: Chopper control has replaced resistance control in all dc traction schemes, such as 1500 V dc main line and suburban traction, 750…