DIY TGSL STEP BY STEP BUILDING AND TESTING

[Qiaozhi]

I am learning from youtube videos on topics like soldering and testing components with multimeter how to attach pots veriables in a circuit etc but i am in too much hurry to build effective MD for justified reasons. at the moment four projects on table but none worked and i am yet to go into lengths of copper wires i purchased for coil building. how is the learning curve with electronics ?

Start from the very beginning with the Dummy's Guide to Electronics. First try to understand passive components (resistors, capacitors and inductors) before moving on to semiconductors. Forget about the MD projects at the moment, and concentrate on learning the basics. You might say that you're in too much of a hurry, but trust me it will end up faster in the long run if you actually know what you're doing. Continuously blundering around will get you nowhere, except to end up even more confused than when you started. Wouldn't it be satisfying to be able to look at a schematic and understand what it means, rather than it looking like a foreign language?

[chuubaba]

your words make sense so let me make a post on my oscilloscope settings and Tx Rx readings and then i will wait for you to suggest the first free book/books from internet to read. Besides i know basic mathematics, geometry, physics, biology and chemistry and I have experience in plugging woofers direct in to 220v AC. i also have analog 20MHz oscilloscope and digital multimeter. I have arduino nanos and unos and breadboards and everything required to make a pcb plus three sets of components for TGSL, BARA, FFLEZJOO and KING COBRA... to help you recommend study material.... shall be very thankful

Start from the very beginning with the Dummy's Guide to Electronics. First try to understand passive components (resistors, capacitors and inductors) before moving on to semiconductors. Forget about the MD projects at the moment, and concentrate on learning the basics. You might say that you're in too much of a hurry, but trust me it will end up faster in the long run if you actually know what you're doing. Continuously blundering around will get you nowhere, except to end up even more confused than when you started. Wouldn't it be satisfying to be able to look at a schematic and understand what it means, rather than it looking like a foreign language?

[chuubaba]

A member asked me abt calibration of my oscilloscope and i didn't know anything about it. Attached are pictures of my oscilloscope in calibration mod with its knobs in respective positions for the experts to see what are its calibration settings and how these translate the waves from Tx and Rx of my silent TGSL. Thank you ppl

[Qiaozhi]

your words make sense so let me make a post on my oscilloscope settings and Tx Rx readings and then i will wait for you to suggest the first free book/books from internet to read. Besides i know basic mathematics, geometry, physics, biology and chemistry and I have experience in plugging woofers direct in to 220v AC. i also have analog 20MHz oscilloscope and digital multimeter. I have arduino nanos and unos and breadboards and everything required to make a pcb plus three sets of components for TGSL, BARA, FFLEZJOO and KING COBRA... to help you recommend study material.... shall be very thankful

You must have spent a fortune on components so far, so why do you want to get the books for free?
Just go to Amazon and buy a copy -> https://www.amazon.co.uk/gp/offer-li...1088692&sr=8-1

[dbanner]

The only books I would recommend buying are the ones that are for sale. And then they would have to be good books( inside the metal detector).
There are however much variety of Free eBooks online one can download. I'm not talking about pirate, but genuine free.
Like Navy course and U.S document from various departments. All free and all the best.

[dbanner]

Also, truly Rich people don't like to get anything illegal for Free. They much rather pay for it.
Only the truly poor folks look for ways to get access to privilege high knowledge of elite class
Ironically, this does not affect the overall sales of item
The rich will always buy genuine item

[chuubaba]

The problem is with payments. Although i have business accounts and import export permits etc but those are for commercial transactions only else audit can grill me. Besides we are now in grey list of countries that means more restrictions and higher costshttps://www.brecorder.com/2018/06/28...-in-grey-list/

You must have spent a fortune on components so far, so why do you want to get the books for free?
Just go to Amazon and buy a copy -> https://www.amazon.co.uk/gp/offer-li...1088692&sr=8-1

[dbanner]

IMF

[Carl-NC]

I cleaned out the OT discussions. See "FET switches" in the Tech forum and "TGSL Wireless" in the TGSL forum.
It took me about 20 minutes to re-read this entire thread, figure out which discussions went where, get all the posts moved, delete the remaining banter, and type this reply. That's 20 minutes of wasted time for me.
PLEASE START A NEW THREAD FOR OTHER DISCUSSIONS. Thanks.

[chuubaba]

Karl you did a great job. I will get you free beers if you come to my country.

[chuubaba]

i hooked the probe as directed by you. my scope displays wave much widers than one big square. As i set it to 0.5mS then it is exactly one big square width.

91 hz should not be present anywhere on the board. Either something is very wrong with the board or your scope is malfunctioning or seriously out of calibration. It is up to you to figure out which before you go further.

Most scopes have a 1Khz reference square wave terminal on the front panel. hook a probe to it and set the time-base switch to 1 ms/div. Each full cycle should be 1 major division. If not find out why before going further.

[rickb]

.5 ms per cycle is 2 KHz. very unusual but not impossible. Is the variable adjustment for the time base switch in the calibrate position? it should be.

Do you have a working transmit coil hooked up to the tx terminals. Is the gnd clip of the probe connected to the gnd terminal of the coil?

The tx freq is about 14 KHz or about 70 microseconds per division.

[chuubaba]

Rickb I will conduct fresh test and share pictures so you can look in to it. I am very thankful for your attention and response. stay with me

Is the variable adjustment for the time base switch in the calibrate position?
The tx freq is about 14 KHz or about 70 microseconds per division...............

[daluka]

TGSL 101
An introduction to the “Tesoro Golden Sabre Light”
page 19

If you have a dual trace oscilloscope, read on!
Advanced Nulling Methods
1. Connect the “A” channel of scope to U103 pin 5. - Set scope to DC setting.
2. Set the GB pot to the mid range position.
3. Start with coils apart and start to overlap.
4. Continue increasing overlap until the the D.C. Signal on Pin U103 pin 5 is 0 volts. Check the
phase relationship between J1-1 (Tx signal) against U101 pin 7 (Rx signal). If resonant
frequencies are correct, the Rx signal will now be lagging the Tx signal by approximately 20º .

[chuubaba]

I just discovered that all ICs on my TGSL are placed wrong . I have discovered this after reading the schematic. All IC are correctly positioned only if i solder them on solder side of the PCB and this has its own challenges so i will rather build a new PCB. If you have a tested and working TGSL pcb design (single sided without any SMD) then pplz share with me.

TGSL 101
An introduction to the “Tesoro Golden Sabre Light”
page 19

If you have a dual trace oscilloscope, read on!
Advanced Nulling Methods
1. Connect the “A” channel of scope to U103 pin 5. - Set scope to DC setting.
2. Set the GB pot to the mid range position.
3. Start with coils apart and start to overlap.
4. Continue increasing overlap until the the D.C. Signal on Pin U103 pin 5 is 0 volts. Check the
phase relationship between J1-1 (Tx signal) against U101 pin 7 (Rx signal). If resonant
frequencies are correct, the Rx signal will now be lagging the Tx signal by approximately 20º .

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