TESORO GOLDEN SABRE

[dbanner]

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

[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]

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]

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!

[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 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]

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

[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]

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!!!

[dbanner]

Also, I draw your attention to the OP07D chips, those are superb finds.

Someone can say if they can be used in the RX preamp.

[dbanner]

Because I couldn't get the 2N2907 in my local stores, I went to a junkyard and found some cards where such a component was found. Here I send you the photos[ATTACH]56884[/ATTACH][ATTACH]56885[/ATTACH][ATTACH]56886[/ATTACH]

Those junkyard finds are great. There's lots of very good components.

I see original 3140 chip in metal can which is classic device. You don't see those except for many fake 8 pin dip version. Many vintage metal detectors contain those for the push tune circuit.
Test the transistors. Basic junction test.

[Ruben2000]

Here are the +8V measurement photos. It looks like it's correct.
Then I will go to the TX stage.

[Ruben2000]

Because I couldn't get the 2N2907 in my local stores, I went to a junkyard and found some cards where such a component was found. Here I send you the photos

[Ruben2000]

Hello friends, to start assembling the TGSL PCB I am going to solder all the bridges first, then I am going to place all the components of block 11 which is the +8 V output.
And then I'll continue with block 1 which is the Tx stage.

[Ruben2000]

Hi friends!!
I'm going to repeat the TGSL; I did it last time and couldn't get the drive to work.
Here is my homemade PCB.