International Journal in IT & Engineering (IJITE) Volume 8 Issue 5, May 2020 ISSN: 2321-1776 Impact Factor: 6.493 Journal Homepage: http://ijmr.net.in, Email: irjmss@gmail.com Double-Blind Peer Reviewed Refereed Open Access International Journal 1 International Journal in IT and Engineering http://ijmr.net.in, Email: irjmss@gmail.com IMPLEMENTATION OF TRANSISTOR RECTIFIERS AND COMPARISON WITH DIODE RECTIFIERS Sampreeth S J * Mangalore institute of technology and engineering (MITE), Moodabidri, Karnataka-574225, India ABSTRACT This paper presents a comprehensive comparison of transistor rectifiers with diode rectifiers. In the modern-day electronics, rectifiers are used for the conversion of AC to DC voltages. The present investigation focuses on exploring the various rectifier circuits constructed using a transistor (BC547) instead of rectifier diodes (1N4007). Forward and reverse bias conditions of the diode were realized using a transistor. Half-wave and full-wave rectifiers were constructed using transistors. The obtained output waveforms were compared with rectifier diode waveforms. The calculated values of rectification efficiency are presented. Keywords: Transistor; Diode; waveforms; Rectification. 1. INTRODUCTION A device whose output is a direct current voltage when an alternating current voltage is supplied as input is generally known to be a rectifier. An alternating current changes its direction periodically while the direct current maintains a constant voltage in one direction. The voltage obtained at the output is not a perfect constant voltage instead, it varies the voltage periodically in the positive cycle itself. To convert this pulsating dc voltage to a constant voltage a filter is needed. The positive voltage obtained across the output load can be a half-wave or a full-wave. It depends on the design and implementation of the rectifier circuit. In daily life, electronic gadgets used by a lot of people. They require a constant direct current voltage to operate. The direct-current voltage is not available in the power supplies we use frequently. The alternating current is available and for major sources this serves as the power supply. The only way we can get direct current voltage is by converting alternating current voltage. This conversion can be done by using a rectifier and a filter to convert it to a constant voltage [1]. The alternating current changes its polarity and direction which is not suitable for electronic gadgets as they require a constant direct current voltage. The rectifier allows only the positive polarity part of alternating current to pass through the circuit through the load across which output is obtained. The output after the conversion in a rectifier is not a constant direct current voltage, but is a pulsating direct current [2] The alternating current consists of negative voltage as well as positive voltage changing periodically. At the output of the rectifier if only positive voltages are allowed, then it a half-wave rectifier. The alternating current voltage available in every home is a single-phase supply. The negative voltages are therefore blocked by the rectifier circuit. The