Single rail bidirectional pulse driver

A tablet docking system, comprising:

• a computerized tablet;
• a dock onto which the computerized tablet docks;
• and
• a bidirectional pulse driver circuit, comprising:
• a forward pulse trigger circuit;
• a forward pulse loop circuit connected with a load comprising a wire coiled around a soft magnet, wherein:
• the forward pulse loop circuit comprises a first silicon-controlled rectifier (SCR) that is activated by the forward pulse trigger circuit;
• a reverse pulse trigger circuit;
• a reverse pulse loop circuit connected with the load, wherein:
• the reverse pulse loop circuit comprises a second SCR that is activated by the reverse pulse trigger circuit;
• and
• a controller in communication with the forward pulse trigger circuit and the reverse pulse trigger circuit, wherein:
• the controller activates the forward pulse trigger circuit and the reverse pulse trigger circuit in a first pattern to cause a current pulse to be applied to the load in a first direction to set a polarity of the soft magnet;
• and
• the controller activates the forward pulse trigger circuit and the reverse pulse trigger circuit in a second pattern to cause the current pulse to be applied to the load in a second direction to set the polarity of the soft magnet in reverse from the first pattern.