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dalekmoore2007 · 30th Oct 2018, 6:34 am

Thanks for the replies every one Dom yes it works very well when you think a mains transformer was made for 50hz or 60hz .
I knew it worked from memory 20 years ago one of those things had a broken z connection and needed one !
How good is it its junk every one has laying around and would work on any scope .
Steve Anderson mentioned on the NBTV forum mains transformers are flash tested to 2.5kv so here its working at half that .
From my tests it works great ,no electronics 4 connections to worry about .
It was mentioned to me also best use a newer transformer not some rusty one where its falling to bits ! I would be interested if any one else gives it a go ,i plan on trying the transformer passive modulation on my magnetic FSC colour monitor i am building ,as i have only ever tried it on a electostatic tube ...
So any one trying this with something else remember 1.5Kv or so volts negative can jump wires i only know it works on a mains transformer.

30th Oct 2018, 6:34 am	#7
dalekmoore2007 Pentode Join Date: Aug 2008 Location: Melbourne, Australia Posts: 213	Re: Passive Cathode ray tube modulation Thanks for the replies every one Dom yes it works very well when you think a mains transformer was made for 50hz or 60hz . I knew it worked from memory 20 years ago one of those things had a broken z connection and needed one ! How good is it its junk every one has laying around and would work on any scope . Steve Anderson mentioned on the NBTV forum mains transformers are flash tested to 2.5kv so here its working at half that . From my tests it works great ,no electronics 4 connections to worry about . It was mentioned to me also best use a newer transformer not some rusty one where its falling to bits ! I would be interested if any one else gives it a go ,i plan on trying the transformer passive modulation on my magnetic FSC colour monitor i am building ,as i have only ever tried it on a electostatic tube ... So any one trying this with something else remember 1.5Kv or so volts negative can jump wires i only know it works on a mains transformer.