Electronics. A circuit or device whose output is restricted to a certain range of values irrespective of the size of the input.

Any device for producing an output whose frequency or whose voltage is three times that of the input.

Electronics. A valve or circuit which produces an output signal containing frequencies equal to the sum and the difference of the frequencies of…

A device that makes a voltage or current four times as great. Frequently attributive.

A device that quantizes a signal applied to it.

Electronics. A circuit or device that produces an output dependent on the sum of two or more inputs.