UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post - Oh no

PJL · 21st May 2010, 11:55 pm

Thanks DangerMan, the PL81 is off, the current is ramping down into the boost cap, the line drive trimmer changes the slope of the leading edge of the line pulse so the PL81 is turned on at the exact time the current reaches 0 at mid-screen.

21st May 2010, 11:55 pm	#97
PJL Dekatron Join Date: Sep 2005 Location: Seaford, East Sussex, UK. Posts: 5,997	Re: Oh no - another V4! Thanks DangerMan, the PL81 is off, the current is ramping down into the boost cap, the line drive trimmer changes the slope of the leading edge of the line pulse so the PL81 is turned on at the exact time the current reaches 0 at mid-screen.