Centre-Tap Full-Wave Rectifier

jojo December 19, 2013 2 Comments
Centre-Tap Full Wave Rectifier We have already discussed the Full Wave Bridge Rectifier, which uses four diodes, arranged as a bridge, to convert the input alternating current (AC) in both half cycles to direct current (DC). In the case...
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Half wave rectifiers

jojo July 31, 2018 57 Comments
A simple Half Wave Rectifier is nothing more than a single pn junction diode connected in series to the load resistor. As you know a diode is to electric current like a one-way valve is to water, it allows...
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Photo diodes

jojo August 24, 2009 No Comments
Photo-diode is a two-terminal semiconductor P-N junction device and is designed to operate with reverse bias. The basic biasing arrangement, construction and symbols for the device are given in figure. It is either mounted in translucent case or has...
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Class D power amplifier

jojo December 17, 2013 1 Comment
Class D power amplifier. Class D power amplifier is a type of audio amplifier were the power handling devices are operated as binary switches. Since the power handling devices (MOSFETS) works as perfect binary switches, no time is wasted...
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Class C power amplifier

jojo January 9, 2014 4 Comments
Class C power amplifier. Class C power amplifier is a type of amplifier where the active element (transistor) conduct for less than one half cycle of the input signal. Less than one half cycle means the conduction angle is...
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Class AB power amplifiers

jojo October 20, 2011 No Comments
  In class AB power amplifiers, the biasing circuit is so adjusted that the operating point Q lies near the cut-off voltage. During a small portion of negative half cycle and for complete positive half cycle of the signal,...
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Harmonic distortion in power amplifiers

jojo January 14, 2014 4 Comments
Harmonic distortion in power amplifiers. Distortion is a serious problem faced in power amplifier design. In faithful amplification the output signal must be a scaled replica of the input signal and if there is any dissimilarity between the input...
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Class B power amplifier

jojo January 9, 2014 1 Comment
Class B power amplifier. Class B amplifier is a type of power amplifier where the active device (transistor) conducts only for one half cycle of the input signal. That means the conduction angle is 180° for a Class B...
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Transformer coupled class a power amplifier

jojo October 18, 2011 5 Comments
TRANSFORMER-COUPLED CLASS A POWER AMPLIFIER This is also sometimes referred to as single ended power amplifier. The term “single ended” (denoting only one transistor) is used to distinguish it from the push-pull amplifier using two transistors. In case of...
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