What is the role of stimulating circuit

[mustefa ubram]

hi to all freinds
i have a question about postive detectors.please help me:
What is the role of stimulating circuit, in positively detectors?How it helps to detect?

[Geo]

Nothing special. One oscillator gives a signal to a coil. This coil transmitting the signal and the receive coil receives it. The signal is very low. With this way the receiver can receive more low signals than without it

[mustefa ubram]

With this way the receiver can receive more low signals than without it

tank you geo
Can you explain more about it?

[Geo]

tank you geo
Can you explain more about it?

Sorry but i can't explain (i don't know). But i saw it at experiments in my lab.

[detectoman]

mustafa the stimulator oscillator electromagnetic wave have a oscillation submultiple near the rx coil electronic resonance, but no how by excitin these rx, then a exterior signal electronic resonance intermediate came of air, put contact betwen the two oscillators, doing shot further the amplifier, how a short circuit, excusme for my bad english