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Contents

Network Analysis

Circuit Elements

Circuit Elements Review Independent Sources Dependent Sources Source Transformation Dot Convention Star-Delta Transformation

Network Theorems

Kirchhoff's Laws Mesh Analysis Nodal Analysis Superposition Theorem Thevenin's Theorem Norton's Theorem Maximum Power Transfer Reciprocity Theorem Millman's Theorem Tellegen's Theorem Compensation Theorem

Transient Analysis

Transient Behavior First Order RC Circuits First Order RL Circuits Second Order RLC Series RLC Parallel Response Laplace for Transients Initial Conditions

Sinusoidal Steady State

Phasors Impedance and Admittance AC Power Analysis Complex Power Power Factor Correction Three Phase Systems Power Measurement 2-Wattmeter Unbalanced 3-Phase

Resonance

Series Resonance Parallel Resonance Q Factor and Bandwidth Locus Diagrams

Two-Port Networks

Z Parameters Y Parameters h Parameters ABCD Parameters g Parameters Parameter Conversions Interconnection of Two-Ports T and Pi Networks

Network Synthesis

Network Synthesis Intro Positive Real Functions LC Network Synthesis RC Network Synthesis RL Network Synthesis Foster Forms Cauer Forms Properties of LC/RC/RL Immitance

Other Topics

Graph Theory Cut Set and Tie Set Duality SPICE Basics Filter Fundamentals Constant-k Filters m-derived Filters

Other Subjects

Analog Electronics Digital Electronics Signals & Systems Control Systems Electromagnetic Theory Digital Communication Analog Communication Microprocessors VLSI Design Verilog HDL Power Electronics Embedded Systems DSP Electronic Devices

Section Progress100%

8 of 8 articles

T and Pi Networks

Equivalent circuits for two-ports.

Updated: 19 March 2026

5 min read

T and Pi Networks

Test your ability to analyze T and Pi equivalent two-port circuit topologies.

Question 1 of 3

Q1.A T-network has series arm impedances Z1 and Z3 at port 1 and port 2 sides, and a shunt arm impedance Z2 to ground. What is Z11 (open-circuit input impedance)?

Related Articles

Parameter Conversions

Relationships between Z, Y, h, ABCD.

6 min read

h Parameters

Hybrid parameters, transistor modeling.

5 min read

Z Parameters

Open-circuit impedance parameters.

11 min read

Y Parameters

Short-circuit admittance parameters.

5 min read

g Parameters

Inverse hybrid parameters.

4 min read

Interconnection of Two-Ports

Network Synthesis Intro