transmiter 11kh

[BigBang]

Hello Friend's


Varna I built this coil. This time to shape the professional and my Shield. ن connected to the circuit frequency frequency meter got size. 7.5 kh circuit output frequency is not 11kh. Why is it?

Changing capacitor 33 to less or more nano-circuit sensitivity to change, but the depth of disclosure does not change.

Please increase my depth of this circuit detection can help

With respect

mesyna

Dear Mesyna , if you have correct capacitance an inductance values with original circuit , could be a big mistake . Mike BG wrote very critical clues about antennas. Did you reduce tx coil resistance ?

[mesy64]

Hello Friend's


Varna I built this coil. This time to shape the professional and my Shield. ن connected to the circuit frequency frequency meter got size. 7.5 kh circuit output frequency is not 11kh. Why is it?

Changing capacitor 33 to less or more nano-circuit sensitivity to change, but the depth of disclosure does not change.

Please increase my depth of this circuit detection can help

With respect

mesyna

[ivconic]

Well...as i thought; that coil is not state of the art!
If you want top performances you must make those coils much better.
Make another coils, but this time use some former to wound those and later do not remove coils from former, use formers as coil holders to maintain straight shape.
As at any other design, here also coils must be perfect, if top performances are expected.

[Esteban]

Hi esteban

tank you Like I mentioned capacitor replacement I can to achieve higher and more sensitivity can?

Output resistance r11 to comment??

With respect

mesyna

Mesy:

No the higher... the correct. So, try 27 to 47 nF. This mean you must solder and desolder, solder and desolder. You must to find the best.

[Esteban]

Friend's


I can not find wire coil and the score of 0.31 with the wire I score 0.30. Mslh cause this?

I have prepared for this coil and announced the result you want. Aahm coils made of my previous threads and the other one was 35 ohm 37.2 ohm. Mslh same can not be because the device's performance?

With respect

mesyna

You can use wire 0.30.

[mesy64]

At simulated ,coil was 1500 micro Henry or 1.5 milli Henry
Coil specification respected to what's sascho said : 100 turns ,
0.31 Cu wire , 27x 33 cm

Friend's


I can not find wire coil and the score of 0.31 with the wire I score 0.30. Mslh cause this?

I have prepared for this coil and announced the result you want. Aahm coils made of my previous threads and the other one was 35 ohm 37.2 ohm. Mslh same can not be because the device's performance?

With respect

mesyna

[mesy64]

Mesy

You can increased power in TX with other configuration. But if the tune is bad, you'll no obtain good results. Try recalculating the both capacitor, here in paralell is 36.3 nF. Start trying with one 27 nF and go to 47 nF. There is a cap. with wich obtain more critical point in adjustment.

Hi esteban

tank you Like I mentioned capacitor replacement I can to achieve higher and more sensitivity can?

Output resistance r11 to comment??

With respect

mesyna

[aft_72005]

Mesy64, check oscillator by oscilloscope .
11khz with approximately amplitude 60 volt pp

[aft_72005]

Hello Friend's
You coil Profile 1500mh I have? Total Rounds? No SIM? Coil size
With respect
mesyna

At simulated ,coil was 1500 micro Henry or 1.5 milli Henry
Coil specification respected to what's sascho said : 100 turns ,
0.31 Cu wire , 27x 33 cm

[Esteban]

Mesy

You can increased power in TX with other configuration. But if the tune is bad, you'll no obtain good results. Try recalculating the both capacitor, here in paralell is 36.3 nF. Start trying with one 27 nF and go to 47 nF. There is a cap. with wich obtain more critical point in adjustment.

[mesy64]

Hi mesy 64
Please see this link :
http://www.geotech1.com/forums/showpost.php?p=52233&postcount=10
simulated only oscillator section at the past .
out put voltage was 60 vpp
working frequency 10khz with 1500 uh coil .( depended to resonance circuit)
but sascho said working frequency is 11 kHZ .
also I test only oscillator section at practice . result seem as simulated .
this oscillator can be drive serch coil for perfect electromagnetic field.
Power enough for two box .
Best regards.

Hello Friend's
You coil Profile 1500mh I have? Total Rounds? No SIM? Coil size
With respect
mesyna

[mesy64]

Photo of coils?
Did you made coils for this one?

Hello Friend's

The coil of this device is made. Two of these coils have made the working frequency is 6.5 kh

With respect

mesyna

[aft_72005]

Hello Friend's
In your opinion, this is a powerful transmitter and power is enough?
You built it? Frequency was how do you?
have you pcb from varna???please give to me
With respect
mesyna

Hi mesy 64
Please see this link :
http://www.geotech1.com/forums/showpost.php?p=52233&postcount=10
simulated only oscillator section at the past .
out put voltage was 60 vpp
working frequency 10khz with 1500 uh coil .( depended to resonance circuit)
but sascho said working frequency is 11 kHZ .
also I test only oscillator section at practice . result seem as simulated .
this oscillator can be drive serch coil for perfect electromagnetic field.
Power enough for two box .
Best regards.

[ivconic]

Photo of coils?
Did you made coils for this one?

[mesy64]

Hi mesy 64
My guidance for you ,
sascho said, he built and designer of this towbox , and worked well without problems .

transmitter section interest me, I built only transmitter section
working excellent . as I read your messages , you are beginner .
don’t try exchange some part of detector section . this way ,devious you .

Hello Friend's
In your opinion, this is a powerful transmitter and power is enough?
You built it? Frequency was how do you?
have you pcb from varna???please give to me
With respect
mesyna