Delta Pulse - Take 2

[basellafe]

https://youtube.com/shorts/fgBoHel5v...9-o6ILpp8mvRsF Initial operation of the circuit: a 200ml soda can placed approximately one meter away on a 60x60 coil

[kt315]

text 2

[kt315]

text

[kt315]

Do you have videos and photos of the finished, fully tested pulse metal detector to show the actual performance?

I give you pics.

[kt315]

Hello kt315, I have a question regarding the difference between the Felezjoo and the DP. Both are excellent devices, but I see that each has its own characteristics. The Felezjoo has iron insulation and loses stability, while the DP is the opposite. I'd appreciate your opinion on which one to take with you if you were going out to inspect a site.

sorry, did not build Felezijo.

[basellafe]

Hello kt315, I have a question regarding the difference between the Felezjoo and the DP. Both are excellent devices, but I see that each has its own characteristics. The Felezjoo has iron insulation and loses stability, while the DP is the opposite. I'd appreciate your opinion on which one to take with you if you were going out to inspect a site.

[kt315]

https://www.youtube.com/shorts/U__oZwnHlKw

[GeoMax]

I went there 15 years ago in Istanbul, I made an appointment for a day and time, and the owner didn't meet me on purpose, supposedly he had a lot of work away from his office, I wanted to wait for him, but he said another employee would serve you, don't wait for me, back then the offices were some kind of garages under the block, now, I don't know, I wanted tests, and then I bought a Delta Pulse 3, it was new and they lied to me, it didn't work on the ground, only in the air, and I wouldn't buy anything else from him. Thanks.

Hi Algan,

thanks for your report.

[algan]

Hi Algan,

you can buy a ready made Delta Pulse here already... saves time and effort.

Pulse 3S - Technology Team

I went there 15 years ago in Istanbul, I made an appointment for a day and time, and the owner didn't meet me on purpose, supposedly he had a lot of work away from his office, I wanted to wait for him, but he said another employee would serve you, don't wait for me, back then the offices were some kind of garages under the block, now, I don't know, I wanted tests, and then I bought a Delta Pulse 3, it was new and they lied to me, it didn't work on the ground, only in the air, and I wouldn't buy anything else from him. Thanks.

[GeoMax]

yes, but it would be easier for me to look at and correct a ready-made smd, since it is not on the geotech forum, I will also look for it on https://www.teknolojiekibi.com/yeni/

Hi Algan,

you can buy a ready made Delta Pulse here already... saves time and effort.

Pulse 3S - Technology Team

[algan]

yes, but it would be easier for me to look at and correct a ready-made smd, since it is not on the geotech forum, I will also look for it on https://www.teknolojiekibi.com/yeni/

[GeoMax]

Does anyone have an SMD version of Delta Pulse in Lay format? Thanks

Why not make your own Delta Pulse SMD circuit board? It's not really difficult to make one. You create your own SMD design based on your needs and send it to China for manufacturing.

[kt315]

star_schina did. Новый вариант печатной платы DP - Просмотр темы • Схемы металлоискателей MD4U •


Всем привет.
Решил собрать DP. Где купить готовую печатную плату не нащел, да и, поскольку работаю в области электроники, испытываю некое отвращение к штыревым компонентам еще с начала 20-х годов.
Замыслил сделать свой вариант платы. Первое, у меня нет возможности сверлить отверстия от слова вообще, тоесть печатная плата должна быть односторонней. С перемычками, разумеется. Сделал разводку, протравил, спаял, не работает. Вероятнее всего, не проявил усердия, да и давно не занимался ЛУТ. Видимо, гдето был коротыш неземетный или даже коротыши. Промучался, не получилось. Кстати, вариант платы есть, если кто-то хочет попробовать сделать печатную плату на одной стороне под SMD компоненты, могу дать файлы.
Затем, сделал второй вариант платы, уже двусторонняя под SMD для заказа на производстве. Плата размером 10 на 10 см. Изготовили в Китае. Спаял, снова не работает. В контрольных точках TR3, TR3, TR4 и TR5 импульсы как на картинке. Тоже самое при подключенной катушке. Но вот далее я не могу двинуться. Сигнал после усилителя на U5 через аналоговые ключи объединяется на резисторах R25 и R26. И что дальше, какой он формы или уровня? Хоть я и работаю в области электронике, но не силен в аналоговой , видимо, там далее есть нюанс. Как проверить работоспособность?
Моя схема практически не отличается от "классической", добавил только несколько дополнительных фильтрующих элементов, да аналоговые ключи перетусовал немного для оптимизации разводки. Резисторы, что "рекомендуют" в паре сделать точными, у меня точностью по 0,1%, ьхотя на схеме значаться как 5%. Дело явно не в них. И сдвоенный таймер на генерацию импульса разделил на 2, поскольку в звуковом гереаторе используется одиночный таймер. Это что бы номенклатуру сократить.
Может быть, найдутся гуру, посмотрят схему.
Схему, трехмерку платы, осциллограммы прикрепляю.

Hello everyone. I decided to build a DP. I couldn't find a place to buy a ready-made PCB, and since I work in electronics, I've had a certain aversion to pin-type components since the early 20s. I decided to make my own version of the board. First, I can't drill any holes, so the PCB has to be single-sided. With jumpers, of course. I did the routing, etched it, soldered it, and it didn't work. I probably wasn't diligent enough, and I haven't done any LUT work in a while. Apparently, there was a short somewhere, or even shorts. I struggled, but it didn't work. By the way, I have a version of the board; if anyone wants to try making a single-sided PCB for SMD components, I can provide the files. Then, I made a second version of the board, this time double-sided for SMD components, to order from a manufacturer. The board is 10 x 10 cm. It was made in China. I soldered it, and it still doesn't work. At test points TR3, TR3, TR4, and TR5, the pulses are as shown in the picture. The same thing happens with the coil connected. But I can't get any further. The signal after the amplifier on U5 is combined through analog switches on resistors R25 and R26. So what happens next? What shape or level is it? Even though I work in electronics, I'm not an expert in analog, so there must be a nuance there. How can I check if it's working? My circuit is practically identical to the "classic" one. I only added a few additional filter elements and slightly reshuffled the analog switches to optimize the layout. The resistors that are "recommended" to be precise in pairs are accurate to 0.1%, although they are listed as 5% in the schematic. That's clearly not the issue. I also divided the dual timer for pulse generation by two, since the audio generator uses a single timer. This was done to reduce the number of components. Maybe some gurus will look at the circuit. I'm attaching the schematic, 3D view of the board, and oscillograms.

[algan]

Does anyone have an SMD version of Delta Pulse in Lay format? Thanks

[kt315]

5) LM556 gives more detail than NE556 is that correct? I ask because I analyse the signals after survey, in post processing.

same chip, different manufacturers. no differences.