Polish mine detector

[Dusonn]

Thanks Paul for the links, I have actually seen them before but any information is highly welcomed.
I also own the No.4A mine detector which I intend to make working. Just need to solve the battery problem as these are not available any more according to my information. But I might be wrong. A friend of mine found a B144 EverReady batery in his unit. It is 69V + 1,5V cell, which could work with that but I have to check on it. I found this link for a replica :
http://mysite.wanadoo-members.co.uk/...pages/b114.htm

I might give it a try.

Dusan

[Jon Skagfeld]

Originally Posted by Dusonn

Thanks Paul for the links, I have actually seen them before but any information is highly welcomed.
I also own the No.4A mine detector which I intend to make working. Just need to solve the battery problem as these are not available any more according to my information. But I might be wrong. A friend of mine found a B144 EverReady batery in his unit. It is 69V + 1,5V cell, which could work with that but I have to check on it. I found this link for a replica :
http://mysite.wanadoo-members.co.uk/...pages/b114.htm

I might give it a try.

Dusan

I also have a No 4A detector. It uses a commercial 9V battery and works great.

[Dusonn]

Originally Posted by Jon Skagfeld

I also have a No 4A detector. It uses a commercial 9V battery and works great.

Hi Jon,

could you please describe how you managed to get it working. How many batteries did you use?
Thanks Dusan

[Neil Ashley]

Unless there is a transformer inside you would presumably need 1.5 volt for the heater circult on the valves, plus another battery for the main unit.