possible coil nulling method?

[bernte_one]

hello

after reading the first chapters of the new book inside the metal detector
i got an idea

i have a tens unit for therapeutical use
with this unit i can send electrical pulse to electrodes
for example max specs
100Hz
80mA
pulsewith up 450micro sec
it is power by a 9volt battery

if i connect this unit to a tx coil i should be possible to get a measureable signal at a rx coil

an if i connect a mutlimeter in mV range to rx ciol it should be possible to null the coil arrangement

or not

a next step is to use the pc and the programm nch toner pc linked to amp or tens circiut
so i could send for example a 14khz signal the strengh is regulated over the linked amp (one channel of a pc speaker)


what do you think?

regards

[WM6]

You do not need real Tx detector stage as frequency source to nulling coil.

Any other equal frequency source can do the yob in the same way.

The same on Rx site, sensitive enough mV-meter do the job very well.