Thanks JimB,
Your reply is well understood.
As a project to learn more about metal detectors & the way they work i am in the process of collecting information & putting together a couple of metal detector circuits of different types eg BFO, VLF & PI.
I want to make changes to the circuits & experiment with things a little, to do this & to understand more about the effects of the changes i must be able to get some data on things like field strength, pulse timing etc.
Also to be able to test various coil designs for field strength.
Without being able to actually test & verify everything it will all be guesswork & unreliable results will be obtained. I find it imperative to be able to test & obtain accurate results & is the only way of knowing for sure if changes made are actually beneficial or a waste of time.
I would like to get the testing side of things done first before i venture any further with the project--to me this is the most important thing.
Not much good building things first up if you can't test them with some accuracy.
Hence the need for a circuit to be able to detect the field strength etc & to get it to my PC.
I find all this very interesting & any helpful solutions would be appreciated greatly, as long as you don't mind all my novice questions.
Thanks