The figure shows the transistor connected in common emitter configuration and the figure also shows the hybrid equivalent circuit of such a transistor.

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

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 V_p i.e., 2V_p, 3V_p, 4V_p.

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

The transistor is used to amplify the weak signal a CE amplifier connection is shown in below figure.

The figure shows the transistor connected in common emitter configuration and the figure also shows the hybrid equivalent circuit of such a transistor.

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

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

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

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.