This transformer was used to generate high voltages for an engineering test environment. Disappointingly, it doesn’t seem to reach the voltages I would expect. The output looks likely to be around 100kV, but I have only managed 20kV with excessive primary current. Finally, I have had a chance to investigate this transformer further. I have little information on this transformer and its specification plate has been removed at some point. The video shows some of the testing carried out. ... https://www.youtube.com/watch?v=yc6TocZeXEE

These are some images from testing a Vacuum Tube Tesla Coil set-up. The coil is just a mock-up with parts lying around. I did not really expect it to work at all but the results are encouraging. ... https://www.youtube.com/watch?v=hsh17tJje0A

Looking at a small portable colour TV from the early 90s here. These were quite expensive at the time, particularly if operated from a 12V supply. Badges Realistic (TANDY) this ‘Portavision-30’ TV has a 5” screen and was designed for the UK market using the PAL video format. It’s impressive, given the complexity of early colour CRTs it could be developed into such a small size. The video looks at the construction of the TV and some interesting behaviours of the CRT itself. There is also a extra bit on delay lines as used in analogue TVs. Unfortunately , the video has some flickering images due to the beat frequency between the scan rate and camera refresh. CONTENT: 00:00 - Intro 01:32 – Construction 02:07 – Fix 02:24 - Assembly 03:52 – Test 04:30 – Shadow Mask 04:40 – Magnetisation 05:30 – Delay line ... https://www.youtube.com/watch?v=IztknEzvKZM

HV laboratory 50kv test transformer (5KVA rated) Too much current for my 10A variac. ... https://www.youtube.com/watch?v=GkylS003G40