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Notes, Lectures and Theory of Devices & Circuits for Electronics students

## HYBRID EQUIVALENT FOR CC TRANSISTOR

The figure shows the transistor connected in common emitter configuration and the figure also shows the hybrid equivalent circuit of such a transistor.
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## HYBRID EQUIVALENT OF TRANSISTOR

Figure(a) shows a transistor amplifier circuit. Such circuit can be connected in any one of the three configuration called common emitter,
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## VOLTAGE MULTIPLER

In voltage multiplier circuit two or more peak rectifiers are cascaded to produce a d.c voltage equal to multiplier of the peak input voltages Vp i.e., 2Vp, 3Vp, 4Vp.
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## BJT Bipolar Junction Transistor

This name is a representation for a device having transfer resistors. As we have seen a semiconductor offers less resistance to flow of current in one direction and high resistance in another direction
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## AMPLIFIED OUTPUT OF A TRANSISTOR

The transistor is used to amplify the weak signal a CE amplifier connection is shown in below figure.
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## HYBRID EQUIVALENT FOR CE TRANSISTOR

The figure shows the transistor connected in common emitter configuration and the figure also shows the hybrid equivalent circuit of such a transistor.
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## AC/AC Converters – Changers

A switching converter that changes an ac supply to the ac supply with a different voltage, frequency, phase, or shape is called an AC/AC converter or changer. Read more about AC/AC Converters – Changers

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## CLIPPER & CLAMPER

A circuit which cutoff voltage above or below are both specified level is called clipper. A clipper which removes a portion of positive half cycle of the input signal is called positive clipper. Read more about CLIPPER & CLAMPER

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## DC/AC Converters – Inverters

DC/AC converters named inverters are employed to convert a dc supply to an ac level of a definite frequency and value. Controlled semiconductor devices, such as transistors, SCR, and GTO thyristors are used in inverters. Read more about DC/AC Converters – Inverters

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## OPERATIONAL AMPLIFIER

The operational amplifier is direct-coupled high gain differential amplifier. The term operational amplifier was originally used for the D.C amplifiers which perform mathematical operation as summation, subtraction, integration and differentiation in analog computers.
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