this coil has an impedance of

**2.2Ohm**and needs to be supplied with an

**AC signal**of varying frequency ranging from

**1Hz to 500Hz**which current needs to go up to

**0.5A**, so I have to find a way to amplify the current of a signal generator.

The first solution I came up with was to use an of the shelf audio amplifier, but I had no luck finding one that supported below hearing frequency ranges.

I then turned my attention to power op-amps but I found little documentation about how to use them in such a scenario.

I tried to implement some simple transconductance and current amplifiers with the power amplifier we had in our laboratory (L272 and a TDA2006) with little success...

I never worked with power electronics so I must be missing some important theory knowledge.

Can anyone point me to a chip capable of such a task and to some good resources about this topic?

Thanks in advance,

Morgan