Precision Decade Capacitor

Genrad 1413 - IET Labs (IET Labs)

Six precision decades are employed to provide a range of 0 to 1.11111 F in increments of 1 pF and with an accuracy of 0.05% +0.5pF. Air capacitors are used for the two lower decades and highest grade mechanically stabilized sealed India Ruby mica capacitors are used for the remainder. Air trimmers are used for trimming the two lowest silvered-mica decades. The stability of the 1413 is such that it should not require readjustment with normal service. However, should it become desirable,the four lower decades contain trimmer capacitors that are accessible for this purpose.