Hi Ronv,
So far I have carried out tests with a short test WIRE, setting the signal using a home made COIL/Meter. Over the year or
so I have made different signal generators:
1/ Frequency timed approximately by a 555, and a few parts, no amplification.
2/ The last one is Crystal controlled, and has 2X power Transistors for output amplification. This needs to be turned
down for shorter wires or it gets hot, and it is uneccessary.
Today I carried out a tests on the longest WIRE, and they were dissapointing, and not strong enough to work. So I think
I ought to make sure the Signals into the WIRE are good before proceeding. I don't have a schematic for the 555 circuit,
but it's about as simple as you can design. Here is the Schematic for the XTL controlled circuit.
I built the XTL circuit because the 555 one wasn't strong enough for longer WIREs. Todays test showed that there wasn't
much difference in the signals between both Signal WIRE circuits (with the XTL circuit full on). I had to place the COIL
on the WIRE to get anything. I have made note of the readings from COIL to output along the Amp circuit, and there are
some odd readings, i,e, high COIL input low Amp output.
Bear in mind my test equipment is not brilliant, me also!!
Any ideas, to test and maybe improve these WIRE signal circuits?