Don Bosco College Kottiyam Ofiicial

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LECTURE – 33-ENVIRONMENTAL STUDIES (POPULATION EXPLOSION) FOR B.COM SEM – 1 This is the 33 rd lecture on Environmental Studies. This lecture is based on Human population and Environment which is the 5th module in the subject Environm...

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LECTURE 19-BUSINESS STATISTICS-PROBLEMS ON CONVERSION -MOD 4-BBA -SEM 1 Hi all,This session deal with PRACTICAL PROBLEMS ON CONVERSION

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LECTURE 18-BUSINESS STATISTICS-CONVERSION FROM FIXED TO CHAIN-MOD 4-BBA -SEM 1 Hi all,This session deal with CONVERSION FROM FIXED TO CHAIN AND CHAIN TO FIXED

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LECTURE 127 – DIGITAL ELECTRONICS –BIASED NPN TRANSISTOR - BCA SEM1 When external voltage is applied to an npn transistor, it is said to be a biased npn transistor. Depending on the polarity of the applied voltage, the npn tr...

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LECTURE 126 – DIGITAL ELECTRONICS –NPN TRANSISTOR - BCA SEM1 When a single p-type semiconductor layer is sandwiched between two n-type semiconductor layers, an npn transistor is formed. The npn transistor has three ter...

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LECTURE 125 – DIGITAL ELECTRONICS –BIPOLAR JUNCTION TRANSISTOR OPERATION MODES - BCA SEM1 Transistors are three terminal active devices made from different semiconductor materials that can act as either an insulator or a conductor by the applicati...

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LECTURE 124 – DIGITAL ELECTRONICS –BIPOLAR JUNCTION TRANSISTOR - BCA SEM1 Bipolar transistor integrated circuits were the main active devices of a generation of mainframe and mini computers, but most computer systems now use integr...

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LECTURE 123 – DIGITAL ELECTRONICS –ZENER DIODE AS VOLTAGE REGULATOR - BCA SEM1 A Zener diode is one of the specially designed diodes that predominately works in reverse biased conditions. They are more heavily doped than ordinary diodes...

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LECTURE 121– DIGITAL ELECTRONICS –BRIDGE RECTIFIER WITH FILTER - BCA SEM1 The bridge rectifier is made up of four diodes namely D1, D2, D3 and D4. The input signal is applied across the two terminals A and B while the DC output is ...

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LECTURE 120– DIGITAL ELECTRONICS –BRIDGE RECTIFIER - BCA SEM1 A bridge rectifier is a type of full wave rectifier which uses four or more diodes in a bridge circuit configuration to efficiently convert the Alternating C...

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LECTURE 119– DIGITAL ELECTRONICS – FULL WAVE RECTIFIER WITH FILTER - BCA SEM1 The filter is an electronic device that converts the pulsating Direct Current into pure Direct Current.The filter is made up of a combination of electronic c...