24 May 2021

La forza di Lorentz alla maturità (esperimento)

›
Il testo in italiano sull'esperimento con la forza di Lorentz è poco più sotto. I have been contacted by a father to help his son with t...
20 May 2021

Kit Oscilloscope Clock 8SJ31J review - 4

›
As these kits have re-appeared on eBay in May 2021, more questions have been posted online. I think the input current consumption is not doc...
24 April 2021

SEPTANIX Display from JRC

›
On the popular auctions site I spotted a never seen before(*) calculator that caught my attention.  (*) most calculators stay on the site fo...
12 April 2021

Breadboard socket for valve

›
B9A on breadboard. T o me, playing with vacuum tubes means a lot of trial and error to get where I would like to. Everything is laid on the ...
10 April 2021

Memory upgrade to HP laptop (15-g005nl)

›
When the lockdown started one year ago I was fortunate to have enough computers at home to allow simultaneous distance learning and remote w...
27 March 2021

Help with unknown vacuum tube / valve

›
In the assortment of vacuum tubes I bought there are few items that look all the same and all without marking. What is worse is that they do...
23 March 2021

Things got out of control with the all-valve TX project

›
T he more I read about valve (vacuum tube) oscillators and transmitters, the more I understand the inner workings of those relatively simple...
18 March 2021

Valve sockets!

›
Now that I got a hundred vacuum tubes and an idea of a project, I needed some matching sockets. Without in-person flea markets, I turned to ...