184_notes:ac

Differences

This shows you the differences between two versions of the page.

Link to this comparison view

Both sides previous revision Previous revision
Next revision		 Previous revision
Next revisionBoth sides next revision
184_notes:ac [2018/08/09 19:18] – [Voltage Transformer] curdemma184_notes:ac [2020/08/24 17:50] – dmcpadden
Line 1: Line 1:
 Section 22.2 in Matter and Interactions (4th edition) Section 22.2 in Matter and Interactions (4th edition)
  
-[[184_notes:changing_e|Next Page: Changing Electric Fields]]+/*[[184_notes:changing_e|Next Page: Changing Electric Fields]]
  
-[[184_notes:b_flux_t|Previous Page: Changing Magnetic Fields with Time]]+[[184_notes:b_flux_t|Previous Page: Changing Magnetic Fields with Time]]*/
  
 ===== Changing Flux from an Alternating Current ===== ===== Changing Flux from an Alternating Current =====
Line 28: Line 28:
 To get around this problem, a step up transformer is used to change a low voltage, high current circuit (like what comes out the generator) into a high voltage, low current circuit for transport from the generator to the neighborhoods or wherever it is needed. A step down transformer is then used close to the neighborhoods to return the high voltage, low current back to a low voltage, high current circuit that is then used in your house. You may have seen these around your neighborhood - they look like small boxes attached to the power lines overhead, generally on the lines going from a larger street into a residential area (shown in the figure to the left). To get around this problem, a step up transformer is used to change a low voltage, high current circuit (like what comes out the generator) into a high voltage, low current circuit for transport from the generator to the neighborhoods or wherever it is needed. A step down transformer is then used close to the neighborhoods to return the high voltage, low current back to a low voltage, high current circuit that is then used in your house. You may have seen these around your neighborhood - they look like small boxes attached to the power lines overhead, generally on the lines going from a larger street into a residential area (shown in the figure to the left).
  
-[{{  184_notes:week14_7.png?400|Primary and Secondary solenoids in a transformer}}]+[{{  184_notes:week14_7.png?400|Primary and Secondary solenoids in a step-up transformer}}]
  
 In these notes, we will go through how a step up transformer works and how it uses induction to change the voltage from a low voltage to a high voltage. We will use a basic transformer, which is essentially two solenoids wrapped around a iron ring (shaped like doughnut), as shown in the figure to the right. The first solenoid, which will refer to as the primary solenoid, is connected to the power generator and has the low voltage (and high current). The second solenoid, which we will refer to as the secondary solenoid, should then have a high voltage (and low current) and eventually be connected to the city through a step down transformer.   In these notes, we will go through how a step up transformer works and how it uses induction to change the voltage from a low voltage to a high voltage. We will use a basic transformer, which is essentially two solenoids wrapped around a iron ring (shaped like doughnut), as shown in the figure to the right. The first solenoid, which will refer to as the primary solenoid, is connected to the power generator and has the low voltage (and high current). The second solenoid, which we will refer to as the secondary solenoid, should then have a high voltage (and low current) and eventually be connected to the city through a step down transformer.  
Line 69: Line 69:
 ==== Examples ==== ==== Examples ====
 [[:184_notes:examples:Week14_ac_graph|Analyzing an Alternating Current Graph]] [[:184_notes:examples:Week14_ac_graph|Analyzing an Alternating Current Graph]]
 +/*
 [[:184_notes:examples:Week14_step_down_transformer|Designing a Step-down Transformer]] [[:184_notes:examples:Week14_step_down_transformer|Designing a Step-down Transformer]]
 +*/
  • 184_notes/ac.txt
  • Last modified: 2021/07/13 13:30
  • by schram45