The Index consists of liquid United States dollar-denominated, high yield corporate bonds for sale in the United States, as determined by International Index Company Limited. HTG is based in Boston, MA.
In direct current (DC), the electric charge (current) only flows in one direction. Electric charge in alternating current (AC), on the other hand, changes direction periodically. The voltage in AC circuits also periodically reverses because the current changes direction. Most of the digital electronics that you build will use DC.
Direct Current vs Alternating Current. In order to power all our devices and appliances, we need power. This is generated by power plants and are delivered to us in a variety of ways. Direct current and alternating current are the two ways of transferring power from one point to another with the use of conductors.