Proton Magnetometer (2025 Update)

I challenge you on the name of the magazine. I looked through many issues on line but most of the projects were mechanical in nature.

I suggest the magazine was Practical Electronics, and here is a link to the issue of Oct 1970 with a proton magnetometer on the cover.

Mr Birkitt died a couple of years ago. I gather his children still run theshop, sorting through all his stock. It was The Strait, Lincoln.

Thanks for the corrections to the name and address! It was over eight years ago that I visited Lincoln - good to know that the shop's still there.

The sign in the window back in August shows they are open 2.5 hours a day, on 4 days a week.

That place, where i spent most all of my pocket money, looks like its being rebuilt after being sold tho i very much doubt it'll be back at H.Gee mores the pity!...

It must have contained all the drive belts for every type of cassette recorder ever made!...

I designed/built my own, using a toroid transformer. It would pulse charge - It would turn on, pulse a charge, turn off, and check the battery volts, which determined how long the next on pulse would remain on for. Current when on, was 20 amps. It worked very well, and would rapidely be able to start a car, from a flat battery, or top a battery up, without over charging.

You are correct. Someone else found it too. I downloaded the article. A project for the future.

Thanks, Alan