multiplicador

Multiplicador is a term used in Spanish and Portuguese meaning "multiplier." In broader contexts, it denotes any device or factor that scales an input by a fixed amount or that multiplies quantities. The exact meaning depends on the field, but in general, a multiplicador increases or scales a quantity via multiplication.

In mathematics, a multiplier is the number by which another quantity is multiplied. It is encountered in algebra as a scalar or scaling factor; in digital signal processing, multiplier blocks multiply signals; in computer architecture, multiplication units perform binary multiplication, often implementing hardware multipliers or software routines. A multiplicand and multiplier produce a product.

In economics, the term is associated with the multiplier effect: a change in autonomous spending causes a larger change in overall income. The magnitude depends on the marginal propensity to consume and other factors; it's used in macroeconomic analysis and fiscal policy to estimate the impact of investment or government spending.

In electronics, a multiplier can refer to an analog multiplier, a circuit that outputs a product of two input signals, used in modulation, demodulation, or interactive signal processing. It can also refer to voltage multiplier networks (multiplicadores de voltaje), such as Cockcroft-Walton ladders, used to generate high DC voltages from an AC source.