This is an example of why you would need to use a Voltage Follower "Buffer."
Notice how the lamp won't turn on after the voltage divider if you don't feed it into the Buffer.
DESCRIPTION:
A Voltage ladder is a voltage divider with more than 2 resistors.
EXAMPLE:
This ladder starts with 12V and goes down to 9V, 5V, and 3.3V
EXPERIMENT:
Try to add another ladder and go down to 2.8V :)
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