电路分享基础英文PPT (29).pdf

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1、Transition Process of Linear Dynamic Circuits A circuit that contains capacitor and inductor,in addition to power and resistor.The definition of dynamic circuit:The characteristic of dynamic circuit:when the dynamic circuit state changes,there is a change process to reach a new stable state.This cha

2、nge process is called the transition process of the circuit,also known as the transient process or the dynamic process.-+S1R2RSU(0)t iThere is no transition process.0 t i S2UiR S12UiRR Old steady state New steady state Example:Pure resistive circuit There is no transition process for a pure resistiv

3、e circuit from the old steady state to the new steady state.-+RLSU(0)t iS-+Lu120i SUiR There is a transition process i t 0 LuExample:RL circuit Old steady state New steady state In the RL circuit,when the circuit changes,there is a dynamic process from one steady state to another steady state about

4、the response.-+RCSU(0)t iS-+Cu12t 0 CSuU C0u CuCiExample:RC circuit There is a transition process Old steady state New steady state In the RC circuit,when the circuit changes,there is a dynamic process from one steady state to another steady state about the response.A change in the circuit structure,such as the connection or disconnection of a branch A change in circuit parameters Conditions for the transient process Internal cause:There must be energy storage elements such as inductors and capacitors in the circuit.External cause:The switching happens in the circuit.Switching