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    Circuit Analysis

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    In the circuit of attached figure, S1 is an electronically-controlled switch. It closes at time t = 0 seconds and opens again at time t = 50 milliseconds.

    (a) Determine the currents I1, I2 and I3:
    (i) under steady-state conditions, e.g. after about `5 time constants'.
    (ii) at the instant the switch is first closed.
    (iii) 5 milliseconds after the switch re-opens.

    (b) Determine the time constants for the circuit for when the switch is open and for when it is closed.

    (c) Draw to scale and on a common time axis, waveforms of the three currents over a time of 0 to 80 milliseconds.

    © BrainMass Inc. brainmass.com October 10, 2019, 1:07 am ad1c9bdddf
    https://brainmass.com/physics/ohms-law/circuit-analysis-electronically-controlled-switch-321803

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    This posting contains the solution to the given current and time constant problems.

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