Category : Electronic Devices & Circuits

Electronic Devices & Circuits

Capacitively Coupled Multistage Transistor Amplifier

S Bharadwaj Reddy
Two or more amplifiers can be connected in a cascaded arrangement with the output of one amplifier driving the input of the next. Each amplifier in a cascaded arrangement is

Transistor Amplifier Working Principle

S Bharadwaj Reddy
A linear amplifier provides amplification of a signal without any distortion so that the output signal is an exact amplified replica of the input signal. A voltage-divider biased transistor with

Bridge Rectifier Working Animation

S Bharadwaj Reddy
What is Rectifier? A rectifier is a device that simply converts alternating current (AC) into direct current (DC). The way a rectifier changes AC to DC is by the use

Different Types of Diodes

S Bharadwaj Reddy
Types of Diodes: Small signal or Small current diode – These diodes assumes that the operating point is not affected because the signal is small. Large signal diodes – The

Forward Bias & Reverse Bias Diode Working Animation

S Bharadwaj Reddy

Summary Of Transistor Bias Circuits

S Bharadwaj Reddy
In figures below, npn transistors are shown. Supply voltage polarities are reversed for pnp transistors.  

Methods of Transistor Biasing

S Bharadwaj Reddy
In the interest of simplicity and economy, it is desirable that transistor circuit should have a single source of supply—the one in the output circuit (i.e. VCC). The following are the

Transistor Stabilisation

S Bharadwaj Reddy
The collector current in a transistor changes rapidly when (i) the temperature changes, (ii) the transistor is replaced by another of the same type. This is due to the inherent

Transistor Collector Feedback Bias

S Bharadwaj Reddy
In Figure, the base resistor RB is connected to the collector rather than to VCC, as it was in the base bias arrangement discussed earlier. The collector voltage provides the bias for

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