Lrl from Italy

[roccocoin]

Originally Posted by roccocoin

mustefa hello, I want to ask you a favor, since you've already made ​​the PCB francoitaly I could put the photo in black and white of the printed circuit? I am from Italy as frank I have already contacted him directly, but he told me that he just makes patterns pen and I do not understand nulla.tank

certain that you are just friends here, there frigates of those with electronics do not understand much, I asked for the aid, and ye all site ripped off, if you were to ask for help I certainly also being Italian I would have made ​​available .

[roccocoin]

Originally Posted by roccocoin

certain that you are just friends here, there frigates of those with electronics do not understand much, I asked for the aid, and ye all site ripped off, if you were to ask for help I certainly also being Italian I would have made ​​available .

and can you put the correct photo of 1 pcb, parts list and diagram for mounting all electronic parts labeled? I'm not so good at figuring out but they are good enough to connect them if you post well.

[Tim Williams]

How much testing have you done with this new unit? I may build one and test here.

Tim

[v_gh]

Hi Francois, thanks for the effort
I will connect LCD and IC to the your circuit.
It shows the frequency

[v_gh]

If my circuit works
I'll send it to you
It is very easy to make

[mustefa ubram]

HI FRANCO AN OTHER FRENIDS
i found a problem in schematic and circuit
I have no signal in the capacitor 8 and 9 When the p2 is 1k.
But when p2 is hi Resistance 500k there is a signal The domain pin4 from ic1.
In your opinion, where is the problem?Which is correct?
franco
How much should a domain p-p in c9 and r11?
i put in attech protus file .please see and help me
best wish

for antenna i think need to :
300000/2800000=0.1071428*1000=107/4=26meter wire 1mm
On rod 2 cm =2*3.14=6.28cm Environment rod
260cm/6.28cm=41 *2= 82 rounds wire 1mm on rod 2cm (need for antenna)

[mustefa ubram]

new pcb lay of franco lrl gift for all
best wish

[Nicolas]

Originally Posted by mustefa ubram

HI FRANCO AN OTHER FRENIDS
i found a problem in schematic and circuit
I have no signal in the capacitor 8 and 9 When the p2 is 1k.
But when p2 is hi Resistance 500k there is a signal The domain pin4 from ic1.
In your opinion, where is the problem?Which is correct?
franco
How much should a domain p-p in c9 and r11?
i put in attech protus file .please see and help me
best wish

for antenna i think need to :
300000/2800000=0.1071428*1000=107/4=26meter wire 1mm
On rod 2 cm =2*3.14=6.28cm Environment rod
260cm/6.28cm=41 *2= 82 rounds wire 1mm on rod 2cm (need for antenna)

Hi dear mustefa

My friend I have tested It and work well

You only have error when you select your choice in Current

My friend you have choice AC and you have DC

look here

Create your attention to practice your risk of a damage materials

Achtung!!!!!!!!!!!!!!!!!!!!

[FrancoItaly]

Hi mustefa ubram
You have made my circuit? Or use only a simulator? P2 must be 1K, at TR1 collector it must be an impulsive signal not a squared signal. For the first time I'd suggest using an stylus antenna then go to the test field and vary P1, P2 and P3.
Best Regards

[v_gh]

Hi Mustafa
I think you need to change Q1 with bc183 in your proteus

[mustefa ubram]

Originally Posted by v_gh

Hi Mustafa
I think you need to change Q1 with bc183 in your proteus

hi
q1 is in orginal schematic pnp (bc170).I replaced 557 with 170

[v_gh]

I did not had Frequency in your circuit, but when change this part Oscilloscope Showed Frequency
Also bc170 is NPN No PNP

[FrancoItaly]

Hi All

This is my latest lrl, it's very similar to the first but with a 8Mhz quartz oscillator, it's more easy to build because I give the pcb of this stage and the only fix is to try the right valour of C2,C3 and C4 to have from 2 to 4V output voltage. In my case I have used 1pF for all the capacitors (It depends on the parasitic capacitance of the PCB). The antenna may be a simple stylus and L1 is the same, 3 turs air core, 1cm x 1cm. The components are soldered directly on copper, does not need any hole. The sensitivity is slightly better but maybe depends on subsequent amplification that I made adjustable. In the display stage I use 3 leds but it's possible to use from 1 to ... what you want. The transistors are BC183c or others silicon NPN type with high beta, the diodes are 1n4148 or others. With a scope you must control that at Tr1 emitter there is about 8V signal, you may change C1 for better result.

Best Regards

[FrancoItaly]

Hi All

Touching the antenna input the output voltage decreases slightly and this confirms proper functioning.

Best Regards

[tanrila]

Originally Posted by FrancoItaly

Hi All

Touching the antenna input the output voltage decreases slightly and this confirms proper functioning.

Best Regards

thanks master franco i build your new lrl i can detect mobil field and lamp field with
best regard

[moving]

Ciao Franco,sono nuovo in questo forum,credi che il tuo ultimo progetto postato e"piu"efficace nel rilievo oro sepolto rispetto al precedente ? sai credo , e ne sono convinto che il fenomeno esiste,grazie ma ,estremamente difficile da captare. vorrei assemblare questo progetto ed effettuare prove sul campo , un campo assolutamente predisposto per l"esame in questione.

[Nicolas]

Originally Posted by tanrila

thanks master franco i build your new lrl i can detect mobil field and lamp field with
best regard

You mean by this is Electrostatic???

I advice Franco to eliminate this frequency for lamp field and mobil field

Thank dear for your suggestions

[Qiaozhi]

Originally Posted by moving

Ciao Franco,sono nuovo in questo forum,credi che il tuo ultimo progetto postato e"piu"efficace nel rilievo oro sepolto rispetto al precedente ? sai credo , e ne sono convinto che il fenomeno esiste,grazie ma ,estremamente difficile da captare. vorrei assemblare questo progetto ed effettuare prove sul campo , un campo assolutamente predisposto per l"esame in questione.

Please read the forum rules -> Basic Rules of the Forums
and make your posts in English.

[moving]

Ok, administrator, I apologize for the inconvenience, i'll write" in English.

[FrancoItaly]

Hi moving

My latest lrl it's similar to the first (I mean like performance) but it's more easy to build, in fact, just find the right value for C2, C3 and C4 in order to have an output voltage of 1 to 6V. If you have a test field You can easily check the operation.

Best Regards

[FrancoItaly]

Hi Tanrila

Receiving signals from mobile phones or from other sources is a side effect, also common to metal detector, but it is a sign of proper functioning, no need to change the frequency that I think is the best.

Best Regards

[mustefa ubram]

hi franco
one question :
Why signal is in c8 AND c9 is impulsive?
why is not a squared signal?
This impulsive is emitted in the environment?

[FrancoItaly]

Hi mustefa ubram
The signal in C8 is impulsive because the TR1 stage is an active high pass filter. I don't know Where the impulse goes, the lrl is a passive receiver.
Best Regards

[mustefa ubram]

my new anttena
franco Which version of your lri is the best kind?

[FrancoItaly]

I think that stylus antenna and coil antenna are very similar. The stylus antenna may be elonged with greater sensibility.
Best Regards