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STUDY OF SECOND ORDER NETWORKS SON-01

• Active second order network
• Damping control – over-, critical, and under-damping
• Built-in square wave signal
• Built-in sine wave signal
• Needs an external CRO for response study
• Operates with 220V/50 Hz
• Detailed technical literature and experiment results supplied

INTRODUCTION
Second order networks are important because of the fact that these are the simplest networks that produce the complete range of transient response – from over damping to near oscillations. Although theoretical discussions are normally confined to passive RLC networks, such networks are limited in their performance due to the rather large resistance of any reasonable value inductance that might be constructed to operate at frequencies of few kHz. In the present unit active RC-network has been designed which span the complete behaviour of an equivalent passive RLC network. The user thus has the experience of studying a near ideal passive second order network complete with all theoretical computations and their experimental verifications.

Description

SUGGESTED EXPERIMENTS
(a) Observe and trace from the CRO screen the step response for different values of ζ.
(b) Compute approximate values of equivalent network parameters.
(c) Plot the frequency response for various values of ζ and observe resonance.

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