Nonlinear Differential Equation

AI Thread Summary
Nonlinear differential equations are essential for modeling circuits that include nonlinear components. A common example is Cuha's circuit, which incorporates a nonlinear resistor. Nonlinear elements like diodes or transistors are necessary for circuits to exhibit nonlinear behavior. The tunnel diode is highlighted for its unique property of negative resistance, where increased voltage results in decreased current. This behavior enables interesting applications, including oscillators.
b2386
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Hi all,

Can anyone please give me an example of a nonlinear differential equation used to model a certain type of circuit?

Thanks
 
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Cuha's circuit is a pretty famous one:

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So in order for a circuit to be modeled by a nonlinear differential equation, the circuit must contain a nonlinear resistor?
 
A circuit has to contain a non-linear element like a diode or transistor to behave non-linearly.

A tunnel diode behaves as if it had negative resistance. As the voltage across the diode is increased, current decreases. That leads to cool modelings and applications such as oscillators.
 
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