What would be the best type of circuit to oscillate a voice coil at 100Hz operating with approximately 45mA. I have a supply of 3-3.5 VDC available. I am trying to vibrate the coil and believe that a square output would be best. I have looked at various circuits with the 555 timer, but are there better more efficient ones?
Thank you very much in advance.
Thank you very much in advance.