SPARK GAP SWITCHES f'OR RADAR 



585 



15 20 25 



TIME IN MICROSECONDS 



§2 

 O 



15 20 25 



TIME IN MICROSECONDS 



Fig. 16 — Oscillographic traces of voltage vs. time as measured at the mid-point of a 

 two-gap circuit during breakdown of 1B22 tubes, (a) for starting, (b) for operation at 

 minimum switch voltage. 



