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The datasheets vary by vendor but most are similar if not identical. The 7805 and 7833 are what I call ''IGO'' regulators, because the pinouts are Input-Ground-Output when you are looking at the front.
 
The datasheets vary by vendor but most are similar if not identical. The 7805 and 7833 are what I call ''IGO'' regulators, because the pinouts are Input-Ground-Output when you are looking at the front.
  
Even if your desired output voltage is less than your available input voltage, switching regulators and buck/boost regulators are more efficient, require a much smaller heat sink (if any), but are more complicated than linear voltage regulators.
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Even if your desired output voltage is less than your available input voltage, switching regulators and buck/boost regulators are more efficient (but more complicated) than linear voltage regulators.
  
 
If you need an output voltage higher than the input voltage, you need a [[switching regulator]] -- it can't be done with a simple linear voltage regulator.
 
If you need an output voltage higher than the input voltage, you need a [[switching regulator]] -- it can't be done with a simple linear voltage regulator.
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Note that  
 
Note that  
 
The nice thing about the PTH (plated through hole) regulators, you can insert them directly into a bread board ''and'' you can heat sink these babies with nice TO-220 bolt-on type heat sink. With a heat sink, you can easily run 1A to 1.5A through these without long-term degredation.
 
  
 
[[Media:LM317.pdf|LM317 Datasheet]]
 
[[Media:LM317.pdf|LM317 Datasheet]]

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