Electrical Engineering › Section D · Parallel and series-parallel circuits › Topic D.7
Loaded voltage dividers and potentiometers
The voltage divider rule gives the right answer only while nothing draws current from the divider. Connect a load and the output sags. This topic shows how much it sags, how to design a divider for known loads and how to keep a potentiometer in control.
In this topic
- When the divider has to do work
- A divider supply with several taps
- Worked example: loading the taps
- Stiff dividers and bleeder current
- Worked example: designing for known loads
- The potentiometer as a divider
- Loading a potentiometer
- Worked example: a loaded potentiometer
- Common mistakes to avoid
- Key takeaways
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