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Electronic circuits and components * Course Index * Introduction * About the Author * About this Course * Feedback * Course Navigation * How to use this Course * TINA * Locktronics Fundamentals * Introduction: Fundamentals * Units and Multiples * Electricity * Electronic Principles * Electrical Circuits * Alternating Current * Assessment: Fundamentals Passive Components * Introduction: Passive Components * Resistors * Capacitors * Inductors * Transformers ## Transformer Operations ## Examples: Transformer Operations ## Phase ## Voltage and Turns Ratio ## Examples: Voltage and Turns Ratio ## Current and Turns Ratio ## Examples: Current and Turns Ratio * Batteries, Fuses, Lamps and Switches * Assessment: Passive Components Semiconductors * Introduction: Semiconductors * Diodes * Transistors * Logic Gates * Assessment: Semiconductors Passive Circuits * Introduction: Passive Circuits * Series and Parallel Connections * Kirchoff's Laws * Potential and Current Dividers * Passive Time Variant Circuits * Assessment: Passive Circuits Active Circuits * Introduction: Active Circuits * Power Supply Circuits * Operational Amplifier Circuits * Transistor Amplifier Circuits * 555 Timer Circuits * Assessment: Active Circuits Parts Gallery * Introduction: Parts Gallery * Passive Component Images * Semiconductor Images * Other Images * Quizzes |
(:Summary:Contains the 'action' links (like Browse, Edit, History, etc.), placed at the top of the page, see site page actions:) (:comment This page can be somewhat complex to figure out the first time you see it. Its contents are documented at PmWiki.SitePageActions if you need help. :) * Print (:comment (:if group Site,SiteAdmin,Cookbook,Profiles,PmWiki*:) (:comment delete if and ifend to enable backlinks:) * %item rel=nofollow class=backlinks accesskey='$[ak_backlinks]'% [[{*$Name}?action=search&q=link={*$FullName} | $[Backlinks] ]] (:ifend:) :) * Login Examples: Voltage and Turns Ratio<^< Voltage and Turns Ratio | Course Index | Current and Turns Ratio >^>(:nl:) >>frame round<< Example 1: A transformer has a turns-per-voltage rating of 6. Determine the primary and secondary voltages if the transformer has 1,400 primary turns and 150 secondary turns. >><<
>>id=example1 class=question margin=10px frame round<< Since t.p.v. = 6, the primary voltage (VP) can be calculated thus: t.p.v. = N'_P_' / V'_P_' = 1,400 / V'_P_', V'_P_' = 1,400 / t.p.v = 1,400 / 6 = 233V Similarly, the secondary voltage (V'_S_') can be calculated from: V'_S_' = N'_S_' / 6 = 150 / 6 = 25V >><< >>frame round<< Example 2: A transformer has 1,200 primary turns and 100 secondary turns. If the primary is connected to a 220V r.m.s. a.c. supply, determine the secondary voltage >><<
>>id=example2 class=question margin=10px frame round<< Since V'_P_'/V'_S_' = N'_P_'/N'_S_', V'_P_' x N'_S_' = N'_P_' x V'_S_', therefore, V'_S_' = V'_P_'x N'_S_' / N'_P_', V'_S_' = 220 x 100 / 1,200 = 18.3 V >><< >>frame round<< Example 3: A transformer has 660 primary turns and is designed to operate with a 110V a.c. supply. If the transformer is required to produce an output of 10V, determine the number of secondary turns required. >><<
>>id=example3 class=question margin=10px frame round<< Since V'_P_'/V'_S_' = N'_P_'/N'_S_', V'_P_' x N'_S_'= N'_P_' x V'_S_', N'_S_' = N'_P_' x V'_S_' / V'_P_', N'_S_' = 660 x 10 / 110 = 60 turns >><<(:nl:)(:table style="clear:both":)
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