ELECTRICAL METHODS 



623 



500 CYCLE 

 GENERATOR 



Fig. 390. — Wiring diagram for high frequency inductive 

 equipment using 500-cycle generator for filament and plate 

 supply. C, fixed condensers; VC, variable condensers; T, 

 input transformer; E, voltmeter. 



Fig. 391. — Vertical energizing coil in position, a, medium frequency energizing coil; b, 

 impedance matching transformer with tuning condensers; c, hand-cranked alternator. 



