Classic _1 structure

[Bonzo]

I have questions to the scheme:
1. What moving the bevel between the transmitter and the receiver should be?
2. what stretching the receiver on the amplifier output should be?
3 what moving the bevel between the receiver and VR 6 should be?
I drew pictures to the accident how I would write unclearly.
I am asking because he is building this detector but there is no discrimination.
Schematic:
http://zapodaj.net/eb402a671b21.bmp.html

[mikebg]

I have questions to the scheme:

1. What moving the bevel between the transmitter and the receiver should be?
2. what stretching the receiver on the amplifier output should be?
3 what moving the bevel between the receiver and VR 6 should be?
I drew pictures to the accident how I would write unclearly.
I am asking because he is building this detector but there is no discrimination.

Dear Bonzo, Please, translate the above text to your native language to understand that your English text is not correct. You can use Google translator. Then you write the questions correctly in your native language and play them through a translator to translate them into English. You can send me the questions on my Email. I will be able with Google translator to answer you, even if the questions are written in your native language.
Yours: Mike-BG

[kt315]

Dear Bonzo, Please, translate the above text

mikebg.

he means the phase shift. do not stab. you finely are aware about what Bonzo asked. yes, we are all the asiatics, so be more tolerant with us and our English

[mikebg]

Google translation

Google translation from Polish:
1st: What should be the phase shift between sine transmitter (TX) a receiver (RX)?
2nd: Jkaie should be set phase shift potentiometer VR6,
measured relative to the transmitter?
3rd: What should be the unbalanced voltage at the output of the receiver, measured in mV?
This is what I ask ticked marks "?" in the circuit diagram.

Note that Google refuses to translate word "Jkaie". That means it is not written correct in Polish.

There are answers from Mike-BG (not from REMI group):
1. The phase shift of received voltage in output of RF amplifier can vary from -90 to +90deg from EMV induced in RX coil. The phase shift depends on relative resonance frequency of RX tank (tuned circuit) because it operates as second order low pass filter. To avoid the instability of phase shift, White's adjusts RX tank to low relative frequency about 0,68. For example, if TX frequency is 6500Hz, then the RX tank resonance is about 4420Hz. If you adjust RX tank in resonance with TX frequency, discrimination is not stabile.
2. Take as target a ferrite core and adjust potentiometer VR6 untill unit eliminates the target.
3. In an ideal metal detector, the voltage in pin 6 of U1 should be rail-to-rail thermal noise. That means extremely high gain. However the opamp is not rail-to-rail type and there are two large signals in input: AIR signal and GND signal. You should decrease the gain of U1 untill output voltage becomes sinusoidal.

[mikebg]

mikebg.

he means the phase shift. do not stab. you finely are aware about what Bonzo asked. yes, we are all the asiatics, so be more tolerant with us and our English

KT315, we are participants in a global forum. Because a lot of us do not understand English, we use machine translator. But see above what happens when the translator refused to translate a word or give nonsensical translation?
The English text should be of very high quality to become a normal machine translation. My goal is to get used Krzysztof to use Google translator because it is much faster and easier.
Do you think I know more English than you? You know more but do more mistakes than me because you do not want to lose one minute of time to check your posting with translator before you let it to the forum.

[kt315]

Do you think I know more English than you? You know more but do more mistakes than me because you do not want to lose one minute of time to check your posting with translator before you let it to the forum.

sorry, Mike, but this forum is not related to English lessons and pronouncing. you maybe must to try to find out another forum with best language? eah? the guy asks as he is able to ask on this moment. do not wait he speedy will increase his level in English after your one reply.

good luck