1952 M. G. Young & H. S. Bueche vi. 253 Because the ignitor can be controlled to cause initiation of the arc at any point in the positive half cycle, the average anode current flow can be controlled as in the case of thyratrons.
1962 C. Susskind 361/1 In pulse-type circuits where capacitors are discharged, the ignitor can be made to start the discharge in less than 1 μsec.