Practical Voltage DivisionDon't fall prey to the temptation to use a voltage divider instead of a voltage regulator. Voltage dividers are totally dependent on their supply voltage, so don't try to "regulate" 12V to 5 with a divider. However, there are cases where you might want to use a divider. For example, perhaps you have a 5V A/D converter, but you need to measure 0-10V with it. Of course, you will lose precision, but maybe that's OK.
From what I read, a potential divider set up does exactly the same, but with 2 resistors instead of a regulator. It also doesn't need a heatsink, as it doesn't generate any heat to clip off the voltage. Is that right?
The excess voltage is converted to heat to reduce the voltage which means you have to attach a heatsink depending on how many watts you're burning off.
Thanks, hopefully this isn't a completely ridiculous post
Just realised the datasheet shows a typical set up for setting up a switcher regulator :SI did have some questions though about why you set it up this way (sorry for going off the original topic slightly). Could someone confirm my understanding of why it's set up this way and answer some questions on it (again sorry for having to ask questions that I assume are basics, but my background is on the software side so I'm pretty much a beginner when it comes to hardware):-Pin 1 is the input voltage. The capcitor that's 100?F, is to help smooth the input voltagePin 2 is the output. It's connected to an inductor that stores the output charge? The capacitor that follows (1000?F) is to smooth out the output voltage? I'm not sure what the last symbol represents (solid black triangle pointing upwards with a sine wave line over the top)?Pin 3 is groundPin 4 monitors the current amount 'charged' so it knows whether is should activate or deactivate pin 5Pin 5 controls whether it needs to charge or shut off the voltage depending on the state of whether it has charged 5vCheers