Decade box

In prototyping of electronic circuits, a decade box is a type of test equipment that can be used to substitute the interchanging of different values of certain passive components with a single variable output.[1][2] Decade boxes are made for resistance, capacitance, and inductance, the values of which can be increased incrementally by way of switching the points of contact[clarify] for the input and output throughout a series of the respective components.[1][3][4] The interface for these devices will usually consist of dials or adjustable tape counters, and are operated in-circuit and without any external power source.

A resistance decade box, made in what was then East Germany


  1. ^ a b "More About Decade Boxes | Instrumart". Retrieved 2016-05-22.
  2. ^ "Dictionary and Thesaurus | Merriam-Webster". Retrieved 2016-05-22.
  3. ^ "Decade Resistance Box Hookup Guide -". SparkFun Electronics. Retrieved 2016-10-10.
  4. ^ Graf, Rudolf F. (1973). Modern Dictionary of Electronics (4th ed.). Howard W. Sams & Co., Inc. p. 139.