The voltage gain of the Voltage Follower (Buffer) circuit is 1 i.e. the output voltage will be equal to and in phase with the input voltage. In other words, the output voltage follows the input voltage. Hence the name voltage follower. Thus voltage follower is a non-inverting amplifier with a voltage gain of unity. Figure […]
In Inverting Amplifier, the amplified output signal will be 180º out of phase with the input signal. In other words the output signal is “inverted” as shown in Fig. 2. Therefore this amplifier is known as the inverting amplifier. Figure 1: Inverting Amplifier.
What is Inverting Amplifier Using Op-Amp? Circuit Diagram, Working, Derivation & Formula Read More »
According to the voltage division rule, the voltage across each resistor in a series electrical circuit is given by the ratio of product of the total voltage and that resistance to that of the sum of the resistances among which the voltage is divided.
What is Voltage Divider Rule? Derivation, Circuit Diagram & Formula Read More »
The deflecting torque causes the pointer to deflect from zero position and it may attain any position on the scale. But it is desired that the proportional to the quantity attain any position deflection should to be measured. So controlling torque is essential.
What is Controlling Torque? Methods, Diagram & Formula Read More »
Figure 1: Switched Reluctance Motor. Switched Reluctance Motor can be operated on DC as well on AC supply. It uses no brushes nor any permanent magnet. It is a specialized type variable reluctance stepper motor. It has less number of poles.
Plugging is the simplest type of braking which involves re-connection of motor to supply in such a way that motor develops torque in opposite direction to the movement of rotor system, speed will decrease till zero speed is reached where mechanical brakes are applied and then it will accelerate in opposite direction. This method is
What is Plugging Braking? Connection Diagram & Working Read More »
“In a linear, passive and bilateral single source network, the ratio of response to the excitation is constant even though the source is interchanged from the input terminals to the output terminals”.
Reciprocity Theorem – Statement, Derivation, Examples & Formula Read More »
Purely Resistive Circuit having a pure resistor ‘R’ connected across an A.C voltage source as shown in figure (1). Let the voltage applied to circuit be v.