# multiplier

## Definitions

### Accounting

### Construction

- A factor used to adjust costs for modifications, such as for location, time, or
__size__ of project.

### Economics

- noun a factor which tends to multiply something, as when the effect of new inputs such as investment is to produce a proportionately higher increase in national income

### Electronics

- A circuit or
__device__ which multiplies a number of pulses, cycles, signals, or other input quantity, by a fixed number, such as 2 or 10. For example, electron, __frequency__, or __voltage__ multipliers. - An
__electron tube__ in which secondary electron emissions produce __current amplification__. In it, a __cathode__ releases __primary__ electrons, which are then reflected by multiple electron mirrors, or dynodes, each producing more and more electrons. Depending on the number of dynodes, the amplification factor may be in the millions. Also called __electron multiplier__, or __secondary electron multiplier__. - A circuit or
__device__ whose __output__ __signal frequency__ is an exact integer multiple of its input signal __frequency__. For example, such a circuit could __convert__ a 10 MHz signal into a 30 MHz signal with the use of a __frequency tripler__. Also called frequency multiplier. - A
__component__ or circuit whose voltage __output__ is a multiple of its input voltage. For example, a __rectifier circuit__ which delivers a __DC__ __output voltage__ which is a multiple of the peak of its input AC voltage. Also called __voltage multiplier__ (1). - A precision resistor utilized
__in series__, to extend the voltage __range__ of an instrument such as a __voltmeter__. Also called multiplier resistor, or voltage-range multiplier (2). - An already present number by which another is multiplied. A
__multiplicand__ is a newly introduced number which multiplies the multiplier. For instance, in 13 × 3, the multiplier is 13, while the multiplicand is 3.

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