** 7-1: Series Voltage Dividers
7-2: Current Dividers with Two Parallel Resistances
7-3: Current Division by Parallel Conductances
7-4: Series Voltage Divider with Parallel Load Current
7-5: Design of a Loaded Voltage Divider **

## 7-1: Series Voltage Dividers

- VT is divided into IR voltage drops that are proportional to the series resistance values.
- Each resistance provides an IR voltage drop equal to its proportional the part of applied voltage:

- This formula can be used for any number of the series resistances because of the direct proportion between each voltage drop V and its resistance R.
- The largest series R has the largest IR voltage drop.

## 7-1: Series Voltage Dividers

- The Largest Series R Has the Most V

## 7-1: Series Voltage Dividers

- Voltage Taps in a Series Voltage Divider

- Different voltages are the available at voltage taps A, B, and C.

- The voltage at each tap point is the measured with respect to ground.

- Ground is the reference point.

Fig. 7-2b: Series voltage divider with voltage taps

## 7-1: Series Voltage Dividers

## 7-2: Current Dividers with Two Parallel Resistances

## 7-2: Current Dividers with Two Parallel Resistances

## 7-3: Current Division by Parallel Conductances

- For any number of parallel branches, IT is divided into

the currents that are proportional to the conductance of the

branches.

- For a branch having conductance G:

## 7-3: Current Division by Parallel Conductances

## 7-3: Current Division by Parallel Conductances

## 7-4: Series Voltage Divider with Parallel Load Current

Voltage dividers are often used to tap off the part of applied voltage for a load that needs less than the total voltage.