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| 184_notes:examples:week14_step_down_transformer [2021/07/13 13:31] – schram45 | 184_notes:examples:week14_step_down_transformer [2021/07/13 13:38] – schram45 | ||
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| ===Approximations & Assumptions=== | ===Approximations & Assumptions=== | ||
| - | * We have access to the same materials as we did for the step-up transformer. | + | * We have access to the same materials as we did for the step-up transformer: This allows us to use some of the same relationships from the step-up transformer solution. |
| * The step-down transformer we are building will have a similar design to the step-up transformer. | * The step-down transformer we are building will have a similar design to the step-up transformer. | ||
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| $$V_S=V_P \frac{N_S}{N_P}$$ | $$V_S=V_P \frac{N_S}{N_P}$$ | ||
| - | Remember, we need to step down from the $240 \text{ kV}$ power line to a $120 \text{ V}$ line. This is a factor of 2000. One way to achieve this would be to set $N_P = 20000$, and $N_S = 10$. Due to the huge step down, it may be even easier to design a series of step-down transformers, | + | Remember, we need to step down from the $240 \text{ kV}$ power line to a $120 \text{ V}$ line. This is a factor of 2000. One way to achieve this would be to set $N_P = 10$, and $N_S = 20000$. Due to the huge step down, it may be even easier to design a series of step-down transformers, |