I urgently need help from someone who is willing to help.

[aft_72005]

Hello.
Nexus Sascho waveform and voltage.
Circuit I built in 2009.
A regular sine waveform with a peak-to-peak voltage of about 50 volts.




.

[algan]

I was able to run a sine wave amplitude of up to 800 pp volts across both ends of the coil, and the magnetic field was strong, resulting in greater range... the circuit was powered quite strongly.

What is the consumption? Take a picture with the oscilloscope and let's see 800 pp .

[nejdet]

I was able to run a sine wave amplitude of up to 800 pp volts across both ends of the coil, and the magnetic field was strong, resulting in greater range... the circuit was powered quite strongly.

How will it be used in practice? I think it is unusable in real life!

[Mehranfar]

It can't be a 36 volt battery! 800V pp? How did you measure this voltage?

I was able to run a sine wave amplitude of up to 800 pp volts across both ends of the coil, and the magnetic field was strong, resulting in greater range... the circuit was powered quite strongly.

[Mehranfar]

It can't be a 36 volt battery! 800V pp? How did you measure this voltage?

Why not? Four 9-volt batteries make 36 volts. 5 amps current at both ends of the coil.. with an oscilloscope.

[nejdet]

Nexus pro . 36volt battery . For coil 5A _ 36volt f=8.5khz

800v pp osilator ...

It can't be a 36 volt battery! 800V pp? How did you measure this voltage?

[Mehranfar]

Hello everyone.
This scheme is from the first Nexus models - success...

Nexus pro . 36volt battery . For coil 5A _ 36volt f=8.5khz

800v pp osilator ...

[Mehranfar]

Hello everyone.
This scheme is from the first Nexus models - success...

Hi . Sechematic for nexus standard se ?

[pechkata]

Hello everyone.
This scheme is from the first Nexus models - success...

[Qiaozhi]

This is a Nexus schematic [ATTACH]n441204[/ATTACH]

That schematic is not Nexus. It's an old Bulgarian design which has some similarities.

[Mehranfar]

This is a Nexus schematic [ATTACH]n441204[/ATTACH]

Hello, this schematic is not for this board.

[algan]

This is a Nexus schematic bulgar_sch.pdf

[Mehranfar]

In the photo there is a potentiometer missing but it was because I removed it to remove suspect components to be able to test it outside the circuit and I still haven't replaced it, thank you for understanding.

Please provide a detailed picture of the back and front of the board, and I will draw the schematic for you.

[Voyager]

In the photo there is a potentiometer missing but it was because I removed it to remove suspect components to be able to test it outside the circuit and I still haven't replaced it, thank you for understanding.

[Voyager]

Thanks Carl, I'll try again and explain better what happened. "I urgently need help from someone who is willing to help, I bought a Nexus mp from someone and apparently the electronics had already been touched, I used it a few times normally, and the last time after walking for 5 minutes in a field, I found a large target that made a big explosion in my ears, making a deafening sound and then just silence, my coil only responds to large ferrous targets at 5 centimeters, I opened my detector to see if there was anything apparent, but I only found one thing missing (marked with a circle in the photo), and I don't think it has anything to do with the problem, I need
the schematic to track if there is something with the circuit (normal sound response with the detector connected without a coil, but once connected, no response), I need the circuit schematic to look for the problem with the circuit or the coil (10 bits 7khz), I attached a photo of the circuit but it was not uploaded (thanks Carl for letting me know, I hope this time it will be possible).