Sorry I had not realised I can not put those web addresses up. I don't seem to be able to insert a picture so I have added an attachment. If anyone has experience with any of these could you please let me know what you think.
Thanks
Spectrum tubes pictures.docx
Kathryn
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We have some old ones similar to the top one in your pictures and newer ones like the bottom one. Our newer ones are from Cider House Tech (we get all our pasco gear from there) Never had a complaint about them.
Got a Power supply for our spectrum tubes as this year we had a new physics teacher that was a bit nervous with induction coils .
Plugged an old Tube in and it ran beautifully with a nice constant glow compared to the flickery results that an induction coil normally causes .
New Spectal tube PS.jpg
Got out the newer set of tubes we got from Serrata .
Doh , the bases on the Serrata ones are fatter and they won't fit in the IEC base .
Small base.jpg
Won't fit.jpg
I'm pleased I checked before handing them out .Looks like another small project to make them fit .
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We have a few of these power supplies. Best things we ever bought! Super easy to set up and use. We did have to buy new spectrum tubes but we had a pretty dodgy range anyway. The new ones are mainly a knock off of the IEC ones. In future, I will buy the IEC tubes as they seem to be a bit better quality and hopefully will last a bit longer.
Bottom line, if you hate handling induction coils unnecessarily, these are definitely the way to go.
You are a legend Bigmack. Thank you for sharing your expertise.