AUTOMATIC MACHINE FOR TESTING CAPACITORS AND NETWORKS 1185 



connected to the test fixtures. The commutator is stationary and its 

 segments are connected to the test circuit through permanent wiring. 

 Fig. 4 shows the turret. Each fixture has two sections, one above the 

 other, with the contacts wired in parallel. The lower section is designed 

 for making contact to stud mounted units with long terminals and the 

 upper section for strap mounted units with short terminals. To change 

 the machine "set-up" from one fixture to the other, the turret assembly 

 i.s raised or lowered by means of the hand wheel, shown on Fig. 2, lo- 

 cated at the right of the operator. This feature was incorporated in this 

 machine to facilitate rapid "set-up" which is essential for testing small 

 lots. An overload clutch is incorporated in the driving mechanism to 

 prevent mechanical damage to the machine in case of a "jam". 



Fig. 5 shows the control panels for dielectric strength and impedance 

 and Fig. 6 shows the control panels for the capacitance circuits. 



* 'JSi. 'ii. 







ij;; CAPACITANCE STANDARDS 

 FOR PADDING TEST 

 CIRCUIT ON UNIT NCI 



-CAPACITANCE STANDARD 

 SERIES-PARALLEL 

 AND RANGE 

 SELECTOR SWITCHES. 



CAPACITANCE STANDARDS 

 FOR PADDING TEST 

 CIRCUIT ON UNIT N0.2 



Fig. 6 — Control panels for capacitance circuits. 



