SCIENCE— ADVERTISEMENTS 



Scientific workers can very often profit by the experience of others who 

 have made available the results of their investigations 



G-E Research 



Laboratory^ 



Schenectady^ 



N. Y. 



10,000.volt, 100-m.a. 

 D-C. Testing Set 



Mgli-voltagey direct current? 



The G-E Research Laboratory has devel- 

 oped an apparatus for producing direct 

 current at pressures up to 200,000 volts, 

 2 kw. This outfit consists of a motor and 

 2000-cycle alternator, transformers, 100,- 

 000-volt condensers and kenotrons, and 

 switchboard assembly. 



A small d-c. testing set, also embodying the 

 use of the kenotron as a rectifier, is avail- 

 able for supplying 100 milliamperes at 10,- 

 000 volts. This outfit operates on any 110- 

 volt, 60-cycle circuit. 



Laboratories, colleges or other institutions 

 interested in research or other work requiring 

 a high voltage, d-c, should communicate 

 with the Supply Department, Schenectady 

 Office. 



