COIL PULSERS FOR RADAR 615 



order of 150 kw, with pulse durations of the order of a half microsecond. 

 The non-linear coil here is similar to the one kilogram model pictured in 

 Fig. 1 ; it is mounted on a panel back of the linear inductor indicated on the 

 Figure. The two larger insulators are used to support high-voltage termi- 

 nals, the double terminal at the left connecting to the cathode and heater of 

 the magnetron and the single terminal at the right connecting to the tetrode 

 plate. The smaller terminals provide lower-voltage connections including 

 those to the plate power supply of 1000-1500 volts, the bias source where 

 required, and the heating power supply for the magnetron. In use the 

 network is sealed into a closely fitting oil-filled container. 



ACKNO WLEDGMEN T 



The development of coil pulsers was a cooperative enterprise involving 

 a number of different groups in the Laboratories. Design and engineering 

 of the research models were the work of J. M. Manley, P. A. ReiUng, L. R. 

 Wrathall, W. R. Bennett, L. W. Hussey and E. M. Roschke. Magnetic 

 cores were developed under the direction of R. M. Bozorth and E. E. Schu- 

 macher. Production models were engineered under the direction of F. J. 

 Given. The achievement of successful coil pulsers, moreover, owes much 

 to the efiforts of W. H. Doherty and his radar development group. 



