Monostable Multivibrator – Operation, Types and Application: Monostable multivibrator is a two-stage amplifier with two states—one stable state and another quasi-stable state. The circuit has two transistors Q1 and Q2, one being in the offstate, say Q1, and the other, Q2, in the on state preferably in saturation. These transistors remain in this state for […]
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Astable Multivibrator Definition and its Working: The multivibrator circuit which has no stable state is called the astable multivibrator. The two states of operation of astable multivibrators are quasi-stable (temporary) states. The astable multivibrator, therefore, makes successive transitions from one quasi-stable state to the other one after a predetermined time interval, without the help of
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Multivibrator definition and Types (Astable, Monostable and Bistable): A multivibrator is basically a two stage R-C coupled amplifier with positive feedback from the output of one amplifier to the input of the other, as illustrated in Fig. 31.16. Multivibrator is a switching circuit and may be defined as an electronic circuit that generates nonsinusoidal waves
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Switching Characteristics of Power MOSFET: Power MOSFET is an enhancement mode device modified to handle much large currents and voltages than a conventional MOSFET. Prior to the invention of the power MOSFETs, MOSFETs could not compete with the power ratings of larger BJTs. But now the power MOSFETs are better than the power BJTs in
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Transistor as a Switch Circuit Diagram and Working: The Transistor as a Switch Circuit Diagram and Working can be explained with the help of its output characteristics. Figure 31.2 shows the output characteristics of a typical transistor for a CE configuration. The dc load line for a given collector supply voltage VCC and collector resistance
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What is Switching Circuit? In practice, we often need making (switching on) and breaking (switching off) of an electrical circuit. It is also desirable and sometimes essential that the switching operation (making and breaking of an electrical circuit) be very fast and without sparking. For this purpose, we need a switch, which is defined as
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Double Differentiation – Derivation: Two R-C coupling networks in cascade separated by an amplifier A is shown in Fig. 29.36 (a). The amplifier A is to operate as a linear amplifier and the output impedance must be small with respect to the impedance of R2 and C2 so that this combination does not load the amplifier.
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RC Integrator Circuit Diagram and its Application: A circuit that gives an output voltage directly proportional to the integral of its input is known as integrating circuit. Figure 29.18 shows a typical RC Integrator Circuit diagram. The output voltage across capacitor C will be the integral of the input voltage. It is important to note
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Low Pass RC Circuit Diagram, Derivation and Application: The Low Pass RC Circuit is shown in Fig. 29.18. In a Low Pass RC Circuit, the output voltage vout is taken across the capacitor. Resistance offers fixed opposition. Since the reactance offered by the capacitor C falls with the increase in frequency, low frequency signal develops across
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RC High Pass Circuit as Differentiator: RC High Pass Circuit as Differentiator – A circuit that gives an output voltage proportional to the derivative of its input, is known as a Differentiator circuit. Figure 29.1 shows a typical RC High Pass Circuit as Differentiator. The output voltage across R will be the derivative of the input
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