Jim Hulbert asked: >> Does anyone know how to adjust the discharge rate of a Shaffner NSG 505 HF-Test Generator, circa 1970's? A spark gap is placed on a rotating disk mounted on an AC motor shaft inside the unit and it is supposed to close at a rate of 400Hz. The output pulses, which individually look quite good as far as amplitude and the 1 MHz ring characteristics are concerned, are at a rate of only about 57 Hz as measured on a scope at the pulse monitoring output. <<
I am not familiar with this equipment, Jim, but from your description one idea springs immediately to mind: Are you sure the circuit is CHARGING fast enough? The PRF for discharge may be set by the tooth spacing but the charge time is independent of that. Cortland Richmond This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ieee-pses.org/ To cancel your subscription, send mail to: [email protected] with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Ron Pickard: [email protected] Dave Heald: [email protected] For policy questions, send mail to: Richard Nute: [email protected] Jim Bacher: [email protected] All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc
