Figure 0.1 shows the circuit diagram of a magnetic stimulator made by an international biomedical electronics company. The pulsed magnetic field generated by the transducer coil (represented by the inductor) can be used in a variety of medical treatments including nerve stimulation. The capacitor is precharged to a Voltage Vx between 0 and 1000 V, and then at t = 0 the switch S is closed to trigger the magnetic pulse.
Calculate the following assuming that the switch S and the diode D are ideal:
1. The time response of the coil current after the switch S is closed, as a function of the precharge voltage V x . (Some types of stimulation require a field with a fast rise time and a slow fall time.)
2. The peak coil current for V x = 950 V.
3. The time t 1 at which diode D turns on.
4. The energy dissipated in the resistor for V x = 950 V.
