two box

[algan]

For this circuit, an inductance of 15 millihenries and a capacitance of 470 nanofarads were required; try these values—or possibly 390 nanofarads—within this range. Ideally, the capacitors should be rated for 630 volts.

[pechkata]

readings with cap 0.8uf on TX = and where is 120 V ?

In practice, the virtual work is virtually invisible.

https://www.youtube.com/shorts/wWnFBskDe-0

[pito]

This is the scope readings = very bad, = what you have on IC#G pins 8 and 9 ?

[pito]

readings with cap 0.8uf on TX = and where is 120 V ?

[GeoMax]

Hello,

It might be helpful if we could take a look at your coil setup and settings. Do you have a photo of it? We might see something that's wrong with your setup.

[kece hon]

disconnect the coil from PCB,

put scope on Rx coil withouth C1 = case 1 and with it = case 2. What amplitude you have at 1 m ?

I couldn't get it to resonate although i put several values of capacity
i only got the resception to about 1khz - 26khz its oscilating very much whatever capacity value i put
i did follow one recommendation to put 0.82uf on both sides to get near resonance

This is the scope readings with cap 0.8uf on TX and none on Rx


Thanks for your help

[kece hon]

disconnect the coil from PCB,

put scope on Rx coil withouth C1 = case 1 and with it = case 2. What amplitude you have at 1 m ?

i think it was ZERO
but ill test it and post the reading
Thank you

[pito]

disconnect the coil from PCB,

put scope on Rx coil withouth C1 = case 1 and with it = case 2. What amplitude you have at 1 m ?

[kece hon]

not perfect but it is ok, 200V is good, put Tx box 10m away from Rx box , what amplitude you havw on Rx coil ,

as i said in the first post
if i go beyond 30cm there is ZERO on Rx reception coil , nothing
i'll try synching both coils later with different capacity values
apart from that , do you have any suggestions ? Thanks

[pito]

not perfect but it is ok, 200V is good, put Tx box 10m away from Rx box , what amplitude you havw on Rx coil ,

[kece hon]

what is the voltage amplitude on Tx coil ?

121volts

[pito]

Tx coil value is 7 Mili henry Yellow is TX it is shown on the scope
or what do you mean by your question ?

what is the voltage amplitude on Tx coil ?

[kece hon]

what you have on Tx coil ?

Tx coil value is 7 Mili henry Yellow is TX it is shown on the scope
or what do you mean by your question ?

[kece hon]

Hi kece hon,

you wrote that your coils are facing each other. Facing each other is not correct. The coil arrangement should be like seen in this example picture.



The original web site of the TR-Locator is here:
TRlocator
There you will find instructions for building the coils. It states that with the original coil (according to specifications), a car can be located at a distance of up to 4 meters.

Thank you very much
in order to calibrate it you must first put them facing each other for optimal distance
only then you can put them as shown in your image and change the value of coil capacity in series and parallel to obtain resonance
My problem is very low emission ; power not enough range ??

[GeoMax]

Hi kece hon,

you wrote that your coils are facing each other. Facing each other is not correct. The coil arrangement should be like seen in this example picture.



The original web site of the TR-Locator is here:
TRlocator
There you will find instructions for building the coils. It states that with the original coil (according to specifications), a car can be located at a distance of up to 4 meters.