Touch contact (fingertip) switch from the 1970s with ZC1050 cold cathode thyratron tube (Philips)

First video is https://youtu.be/BjUzuRrQlcc
Correction to this video: on 2.20 I say "silicon diode" but of course I mean "silicon transistor". A very interesting development when I took the touch-switch (video 20 feb 2017 on YT) apart. I found a tube with 4 electrodes, it proved to be the ZC 1050 from Philips, 1970's. It is a trigger tube with neon light inside, when it is triggered. The transistors (BC179 b) proved to be normal PNP silicon transistors. Specifications and info are in the video.
All the videos hat I have published on You Tube can be found via my Channel Trailer: Link is
https://youtu.be/xbgQ8T3oqh4
In thematical order you can find these video’s under the “comments” section. My books about electronics are available via the website from “Lulu”, search for author “Ko Tilman” there. My books are also available via Barnes and Noble and via Amazon. Regarding all my video’s: I constantly keep them actual, so the original video’s with the most recent information are always on YouTube. That is the source, and search there. When my video’s are reproduced or re-edited on other websites/channels you cannot be sure about the original content (=really working electronics) and important adaptations to the circuits.

Видео Touch contact (fingertip) switch from the 1970s with ZC1050 cold cathode thyratron tube (Philips) канала radiofun232