UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post - Oscilloscope question

Chris55000 · 28th May 2020, 5:07 pm

Hi!

Rest assured the 4D25 has a 1N3719 (D307) t.d. hidden away very carefully in the trigger input circuit diagram – it's used to discharge a current pulse into the primary of the trigger pulse coupling transformer T501!

Chris Williams

28th May 2020, 5:07 pm	#27
Chris55000 Nonode Join Date: Aug 2007 Location: Walsall Wood, Aldridge, Walsall, UK. Posts: 2,874	Re: Oscilloscope question - not vintage Hi! Rest assured the 4D25 has a 1N3719 (D307) t.d. hidden away very carefully in the trigger input circuit diagram – it's used to discharge a current pulse into the primary of the trigger pulse coupling transformer T501! Chris Williams __________________ It's an enigma, that's what it is! This thing's not fixed because it doesn't want to be fixed!