TESORO GOLDEN SABRE

[Ruben2000]

I forgot to set the channel 2 selector to AC. Here is another image, top TX at 5V, 20uS and bottom RX pin7 at 5mV, 20uS.

[Ruben2000]

According to my calculations I have an offset of 61.7? which is not adequate.

[Op04]

Is this cable suitable ??? And that it should be a few meters[ATTACH]57004[/ATTACH]

This is good enough, separate shield for tx & rx are better but more cost, more than 1.3 meter, I found less sens

[Ruben2000]

I'm going to shield the coils and see what happens.

[Ruben2000]

Hi friends!!
I shielded the two coils and the wave is no longer deformed; And one more thing, the AC-GND-DC selector of channel 2 of my oscilloscope is failing, which is why it did not reach even the smallest of millivolts.
I put the coils back on the PCB with the shield to ground and got 20 degrees on RX. Here the image:
TX, higher amplitude wave at 5v, 20uS.
Pin7 of U101, smaller amplitude at 5mV, 20uS.
I am satisfied so far, thank you very much for your support.

[waltr]

Hi friends!!
I shielded the two coils and the wave is no longer deformed; And one more thing, the AC-GND-DC selector of channel 2 of my oscilloscope is failing, which is why it did not reach even the smallest of millivolts.
I put the coils back on the PCB with the shield to ground and got 20 degrees on RX. Here the image:
TX, higher amplitude wave at 5v, 20uS.
Pin7 of U101, smaller amplitude at 5mV, 20uS.
I am satisfied so far, thank you very much for your support.[ATTACH]57006[/ATTACH]

Looks real good.

[mostafalesnar91]

Looks real good.

This is not wrong??? it should be the other way around!!

[Ruben2000]

My PCB is not TGSL EDU, but it is similar. I used 2N2222A brand ST metallic type and the pin layouts are correct. You have to be careful with current transistors because many have changed the position of their pins, especially the Chinese ones; that's why better make sure by measuring the pins.

[mostafalesnar91]

My PCB is not TGSL EDU, but it is similar. I used 2N2222A brand ST metallic type and the pin layouts are correct. You have to be careful with current transistors because many have changed the position of their pins, especially the Chinese ones; that's why better make sure by measuring the pins.

No, my friend, this is not the case, nothing changes, this is a universal contract for all electronic components !! Better to say, a big mistake for PCB Edu !!!
It's really embarrassing!!!!!!!!!!!!!!

[dbanner]

Hi friends!!
I shielded the two coils and the wave is no longer deformed; And one more thing, the AC-GND-DC selector of channel 2 of my oscilloscope is failing, which is why it did not reach even the smallest of millivolts.
I put the coils back on the PCB with the shield to ground and got 20 degrees on RX. Here the image:
TX, higher amplitude wave at 5v, 20uS.
Pin7 of U101, smaller amplitude at 5mV, 20uS.
I am satisfied so far, thank you very much for your support.[ATTACH]57006[/ATTACH]

Looking good.
You should have no problems. Your step by step approach is the way to go.

Many people assemble all components and then ask " the circuit does not work, what could be the problem?"

[sinclairuser]

No, my friend, this is not the case, nothing changes, this is a universal contract for all electronic components !! Better to say, a big mistake for PCB Edu !!!
It's really embarrassing!!!!!!!!!!!!!!

rubbish! the transistors he is talking about do indeed have different pinouts, there are at least three to my knowledge.
on 2n2222/a and similar testing the pins or having the correct manufacturers datasheet for the parts you have is really important.

[Ruben2000]

I came across several BC547 transistors where their pins were reversed.

[Ruben2000]

Hi friends!!!
I will now go to block number 9 which is the DISC stage.
I will place all the components and then I will make the measurements with the oscilloscope.

[Qiaozhi]

I came across several BC547 transistors where their pins were reversed.

This is indeed true.
You have to be careful with TO-92 transistor pinouts. See page 202 of ITMD where are three examples from Europe, Japan, and the USA.

[mostafalesnar91]

rubbish! the transistors he is talking about do indeed have different pinouts, there are at least three to my knowledge.
on 2n2222/a and similar testing the pins or having the correct manufacturers datasheet for the parts you have is really important.

Please do not use offensive words!!!!!!! This is what you are saying, I have not experienced it yet !! I never trust the datasheet, I always check it before installing the emitter transistor and collector