ECE201Lect-6

# ECE201Lect-6 - ECE201 Lect-6 1 Series and Parallel Resistor...

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Unformatted text preview: ECE201 Lect-6 1 Series and Parallel Resistor Combinations (2.5, 8.5) ECE201 Lect-6 2 Introduction • For analysis, series resistors/impedances can be replaced by an equivalent resistor/ impedance. • Parallel resistors/impedances can be replaced by an equivalent resistor/ impedance. ECE201 Lect-6 3 Introduction • Complicated networks of resistors/ impedances can be replaced by a single equivalent resistor/impedance. ECE201 Lect-6 4 Equivalent Resistance i(t) + – v(t) i(t) + – v(t) R eq R eq is equivalent to the resistor network on the left in the sense that they have the same i-v characteristics. ECE201 Lect-6 5 Equivalent Resistance • The rest of the circuit cannot tell whether the resistor network or the equivalent resistor is connected to it. • The equivalent resistance cannot be used to find voltages or currents internal to the resistor network. ECE201 Lect-6 6 Equivalent Impedance I + – V I + – V Z eq Z eq is equivalent to the network on the left in the sense that they have the same phasor I-V characteristics at the frequency ϖ . ECE201 Lect-6 7 Series Resistance R 1 R 3 R 2 R eq R eq = R 1 + R 2 + R 3 ECE201 Lect-6...
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ECE201Lect-6 - ECE201 Lect-6 1 Series and Parallel Resistor...

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