Terminator 3, Terminator Trio

[dbanner]

i asked recently russian guys to help me to find a schematic that is emulating a work of coil. the signal must be changed
amplitude and phase simultaneously. this device will give us a possibility to check any VLF schematic without coil.

This is excellent idea. The task of constructing coil to verify a good working circuit is often a painful and time consuming exercise. Also coil can be poorly constructed whereas coil emulator is more precise. Once the detector circuit has been verified and is working well, then focus on building the optimum coil using emulator information.

[Floki]

Very good...BUT, there already exists several SMD layouts on russian forum, why re-invent the wheel

don't share the link?

[Toros]

don't share the link?

Look here:
http://elwo.ru/forum/6-217-1
http://elwo.ru/forum/6-1109-3
http://forum.cxem.net/index.php?/top...0%D0%BC%D0%B8/

http://forum.cxem.net/index.php?/topic/119295-terminator-pro/
http://forum.cxem.net/index.php?/top...0%D0%B8%D0%BE/

[Toros]

don't share the link?

http://radioskot.ru/forum/14-6596-1
http://radioskot.ru/forum/14-13507-1
http://radioskot.ru/forum/14-11877-1
http://www.md4u.ru/viewforum.php?f=80

[Toros]

This is interesting, it's the terminator Trio "M" variation. Notice variable tone discrimination towards end of video. Nice feature.
https://youtu.be/zmABqFa_qIQ
Problem is that there are so many variations with so many different layouts, still can't find the layout KT posted for "double tone" on the russian forum. Google translator is not so good.
Looks to be a very good detector though.

The PCB is here: http://forum.cxem.net/index.php?/top...0%D0%B8%D0%BE/
Post № 1

[Floki]

Toros, I have looked at everything, all links. There is no PCB in smd. Only smd !

[scs]

C16 is 8.2 pf.SBG-PI works much better. When installed correctly starts working right away.

[Toros]

Toros, I have looked at everything, all links. There is no PCB in smd. Only smd !

You're probably joking! These are hundreds of pages in Russian, and you say that you've reviewed them all? Below I give you specific links to a page and a download. You will be able to download a PCB completely in a SMD.
But do not expect someone else to do the job for you.
http://md4u.ru/viewtopic.php?f=80&t=...2aa&start=1175
http://md4u.ru/download/file.php?id=24016

[Toros]

C16 is 8.2 pf.SBG-PI works much better. When installed correctly starts working right away.

Sasho,
Here is the topic for Terminator - Russian detector type inductive balance . You're talking about your PI detector. Do not you go wrong?

[dbanner]

I have made circuits with a resistor k561,k176 and a sd4000 in amplifier mode. They work unstable. When is no signal increased consumption and they are heating up.

This is significant, what do you mean? What is k561,k176? Are you referring to the TX oscillator, with TX coil disconnected, transistors in TX thermal runaway? Is there a solution for this? What is your redesign solution for TX?

[dbanner]

C16 is 8.2 pf.SBG-PI works much better. When installed correctly starts working right away.

Thank you SCS for reply. Yes I know SBG-PI is very good. Just looking at the schematic, It has all the elements of a very good design.
Toros, he was just replying to a question I asked him.

[scs]

To Toros
This is an answer to the dbanner question about my old pi scheme.I already wrote what I think about working as amplifier an CMOS.The operational amplifier works better.

[Toros]

OK! No problem.

[dbanner]

SCS
OK op amp is better, then how do you explain why this project works great and is so popular? What are the advantages/disadvantages of use of CMOS in this way. Why did creator implement this approach?

[dbanner]

Maybe the creator had a huge surplus of these chips leftover from Soviet era and decided to make good use of them.