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Potential dividers. Starter. Starter. Learning objectives. Recall electricity formulae Draw a potential divider circuit Explain how a potential divider circuit works Select and use the potential divider equation.
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Learning objectives • Recall electricity formulae • Draw a potential divider circuit • Explain how a potential divider circuit works • Select and use the potential divider equation
Sometimes only part of the voltage in a circuit is wanted. To allow us to do this we can use a potential divider circuit 6V Here is a simple potential divider circuit. What would you expect the voltage to read? 100Ω 3V V 100Ω
+6V 0V 100Ω 3V
+6V 0V • 200Ω 400Ω 4V 2V
+10V 0V • 100Ω 400Ω +10V 8V 2V
+6V 0V • 138.21Ω 453Ω ??V ??V
R1 Vin Vout R2
1 2 1120 W 1160 W 1120 W 1120 W Voltage in Voltage in Voltage in Voltage in Voltage out Voltage out 2 Voltage out Voltage out 160 W 180 W 120 W 180 W 3 4 Voltage out 1