To many electronics engineers this might seem a stupid question but I was given by my boss the task to find a solution to drive approx. 5A through a coil. The coil's resistance (not considering inductance which would be ~15mH) is about 90 Ohms. The signal is sinusoidal with a frequency of about 3kHz. Since he made this sound pretty easy I am a little bit unsure of how to proceed.
Considering Ohm's law, driving 5A through a 90 Ohms would result in 450V which doesn't seem so trivial to me.
I have a feeling that I'm overlooking some fact but I cannot figure out which one.
A possible idea would be to use a OPA549 which gets at least roughly into that area (bandwidth, output capability) but again, I think that I'm overlooking something. All power amplifiers I can find are intended for audio applications and typically drive a 4 Ohm or 8 Ohm load.
I'd be really happy if you could tell me where I'm wrong or if this actually isn't such an easy task.