One volt across one ohm of resistance causes a current flow of one ampere.Īmpere-hour (Ah/AH) - A measure of the flow of current (in amperes) over one hour used to measure battery capacity.Īmpere hour meter - An instrument that monitors current with time. See also single-crystal silicon an polycrystalline silicon.Īmperage interrupt capability (AIC) - direct current fuses should be rated with a sufficient AIC to interrupt the highest possible current.Īmpere (amp) - A unit of electrical current or rate of flow of electrons. Manufactured by depositing layers of doped silicon on a substrate. Electricity transmission networks use AC because voltage can be controlled with relative ease.Īmbient temperature - The temperature of the surrounding area.Īmorphous semiconductor - A non-crystalline semiconductor material that has no long-range order.Īmorphous silicon - A thin-film, silicon photovoltaic cell having no crystalline structure.

In the United States, the standard is 120 reversals or 60 cycles per second. An air mass of 1.0 means the sun is directly overhead and the radiation travels through one atmosphere (thickness).Īlternating current (AC) - A type of electrical current, the direction of which is reversed at regular intervals or cycles. The air mass is an indication of the length of the path solar radiation travels through the atmosphere.

Absorber - In a photovoltaic device, the material that readily absorbs photons to generate charge carriers (free electrons or holes).Īcceptor - A dopant material, such as boron, which has fewer outer shell electrons than required in an otherwise balanced crystal structure, providing a hole, which can accept a free electron.Īctivated shelf life - The period of time, at a specified temperature, that a charged battery can be stored before its capacity falls to an unusable level.Īctivation voltage(s) - The voltage(s) at which a charge controller will take action to protect the batteries.Īdjustable set point - A feature allowing the user to adjust the voltage levels at which a charge controller will become active.Īcceptor - A dopant material, such as boron, which has fewer outer shell electrons than required in an otherwise balanced crystal structure, providing a hole, which can accept a free electron.Īir mass (sometimes called air mass ratio) - Equal to the cosine of the zenith angle-that angle from directly overhead to a line intersecting the sun.

Key ionic activation bypass