CONTACT PHENOMENA IN TELEPHONE SWITCHING CIRCUITS 53 



-900 



-600 



-300- 



+300 L 



0.5 1.0 



MILLISECONDS 



Fig. 17 — Typical "mixed A and B" transient (voltage). 





 +200 



0.5 1.0 



MILLISECONDS 



Fig. 18 — Effect on voltage transient of changing wire line length — 1100 ft. 



+300L 



0.5 1.0 



MILLISECONDS 



Fig. 19 — Effect on voltage transient of changing wire line length — 600 ft. 



