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Forums
Engineering
Electrical Engineering
Discharging a capacitor faster using an external B-field?
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[QUOTE="Baluncore, post: 6041185, member: 447632"] The need to discharge a capacitor rapidly is usually encountered when resetting a charge integrator circuit. Unfortunately the current in the inductance of the coil needed to generate the magnetic field takes longer to build than does short circuiting the capacitor, and then you must wonder what will happen when you try to turn off the magnetic field. To discharge 1 volt, from a 1 farad capacitor, in 1 second, would only need a current of one amp. To discharge it in 1 nanosecond would require an impossible Giga-amp. By employing commutation, a charge integrator of any capacitance, can be used to generate a sawtooth waveform with a one nanosecond transition time. Why do you need to discharge the capacitor so quickly? [/QUOTE]
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Electrical Engineering
Discharging a capacitor faster using an external B-field?
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