TESORO GOLDEN SABRE

[Ruben2000]

hello banner!!
It seems to me that these components are very good, although some are of a different structure, such as the brown resistors, they seem to me to be precision and can withstand temperature. I don't know if I'm sure. Thanks for your opinion!!!

[Ruben2000]

Hi friends!!
In order to continue with the TX stage I had to make the Tx coil, I made it with 0.25mm wire. (30AWG), in a diameter of 200mm., with 103 turns. I measured it with my homemade inductance meter and it gave me exactly 6000uH.

[Ruben2000]

0.25mm RX coil. (30AWG), 200mm. in diameter, 108 laps. Measurement on my homemade inductance meter at 6500uH.

[Ruben2000]

Hi friends!!
I placed 22n in C1 and 219n in C2, according to the measurement of my instrument and placing the 6000uH Tx coil according to my homemade instrument, I obtained the following measurement according to my instrument.
I am more than satisfied, then I will try with the Rx coil instead of Tx.

[Ruben2000]

Coil Rx instead of Tx is shown in the image depending on the instrument.
It seems to me that my homemade inductance meter measures correctly. Rx at 6500uH.
I will now go to block number 2.

[Ruben2000]

Hi friends!
I just made the measurement at the point U100 Pin6 and this is what I got according to the image. My question is: is the measurement correct?
Any advice will be welcome!

[dbanner]

Hi friends!
I just made the measurement at the point U100 Pin6 and this is what I got according to the image. My question is: is the measurement correct?
Any advice will be welcome![ATTACH]56917[/ATTACH]

Yes.

[Ruben2000]

Ok banner, thanks for your answer.

I made the measurement on block number 3 at the -5V point; when taking the measurement I got a higher reading. Is it correct that it has such an output? since there is no load on the output.

[dbanner]

Yes, it's correct. It's supposed to be a voltage inverter. 8V minus some voltage drop of diodes.

[dbanner]

Although -7.4V maybe should be closer to negative 6.8V.

Silicon diode have voltage drop of 0.5 to 0.6 volts across junction. So I should expect to see -6.8 or thereabouts.???

[dbanner]

I am not so good at these things. But the document says negative 5volts, which I can't see how. Perhaps when connected to the rest it is closer to 6 volts.

I just say the negative rail and leave it at that.

[dbanner]

What circuit you made your inductance meter?

[dbanner]

Hmm, I you salvage diodes from those boards you got, then watch out for schottky type.

Those have low junction forward voltage drop as is well known. Maybe account for the -7.4V you measured.

[Ruben2000]

What circuit you made your inductance meter?

I got it out of here.
https://youtu.be/hMa-AWyuxaA

[Ruben2000]

Hmm, I you salvage diodes from those boards you got, then watch out for schottky type.

Those have low junction forward voltage drop as is well known. Maybe account for the -7.4V you measured.

The diodes that I placed have the denomination ST4148.