Current use: As the SI base unit of electric current, the ampere is used worldwide for almost all applications involving electric current. An ampere can be expressed in the form of watts/volts, or W/V, such that an ampere equals 1 W/V, since power is defined as a product of current and voltage. Current use: As a submultiple of an SI unit, the milliampere is used worldwide, often for smaller measurements of electrical current. There are many devices that measure units in terms of milliamperes such as galvanometers and ammeters, though these devices do not exclusively measure milliamperes. Ampere One of the other cables entering the box runs to the light, the last cable to the switch. The brown core of the light cable is connected to the fourth terminal, while its blue core is connected to the main circuit neutral cores; the earth runs to the earth terminal. The brown core of the switch cable is connected to the main circuit live cores, while its blue core is connected to the light cable brown core. In applications where output load current must be returned to V IN, optional constant current/constant voltage regulation controls either output (or input) current or output voltage and provides a limit for the other. I LIM provides a 10:1 analog dimming ratio.

Definition: A milliampere (symbol: mA) is a submultiple of the SI base unit of electrical current, the ampere. It is defined as one thousandth of an ampere. Definition: The ampere (symbol: A), often referred to as simply amp, is the base unit of electric current in the International System of Units (SI). The ampere is defined formally based on a fixed value for the elementary charge, e, of 1.602176634 × 10 -19 when expressed in the unit C, which is equal to A·s. The second is defined based on the cesium frequency, Δ νCs. This definition is effective since 2019, and is a significant change from the previous definition of the ampere. For low- to medium-power applications, No R SENSE mode can utilize the power MOSFET’s on-resistance to eliminate the current-sense resistor, thereby maximizing efficiency.