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THE BELL SYSTEM TECHNICAL JOURNAL, JULY 1951 



capacitances are continuously adjustable, by unwinding the outer end of the 

 bifilar winding, and trimming off the excess length. The nominal capacitance 



Fig. 32 — Building-out condensers designed for installation within carrier loading splice 

 sleeves. Upper view: Continuously adjustable, wire-wound condenser. Lower view: 

 Non-adjustable, mica insulated condenser in small canvas bag. The upper part of each 

 view shows the containers in which the condensers are placed, to protect them from 

 moisture penetration and physical injury during the period intervening between manu- 

 facture and installation. 



values, prior to adjustment, range from 500 mmf to 3000 mmf . In occasional 

 instances where the total required capacitance cannot be provided by the 

 highest-capacitance wire-wound condenser, a non-adjustable mica condenser 



