Full m/lab SD2000 schematics

[Geotech11]

That they definitely have 100n on the positive and negative terminal according to gnd. And tantalum in some places.

N-channel MOSFET: PIN-D is connected to a 150 µH inductor, and PIN-S is connected to the negative terminal (-VB) of a 6V battery. Is this connection correct?

[Geotech11]

If the red connecting wires shown in the diagram are connected together, will this result in an abnormal +5V output?

[Geotech11]

The battery voltage is 6V. The low-battery detection circuit is functioning correctly; the LED flashes when the voltage drops below the threshold. The voltage measured between pins 2 and 3 of the LM336 is 2.5V. Test points at pins 2, 10, and 12 of the CD4093 measure a frequency of 62.5 kHz with a 50% duty cycle.

If the red connecting wires shown in the diagram are connected together, will this result in an abnormal +5V output?

[Geotech11]

Did anyone try this schematic ( i mean both - original and modificated) for errors? In a matter of educational purpose, did anyone make so that we know it really works?
Regards

The battery voltage is 6V. The low-battery detection circuit is functioning correctly; the LED flashes when the voltage drops below the threshold. The voltage measured between pins 2 and 3 of the LM336 is 2.5V. Test points at pins 2, 10, and 12 of the CD4093 measure a frequency of 62.5 kHz with a 50% duty cycle.

[Geotech11]

schematic was remade by Vladimir. enjoy

Hello! I encountered an issue while taking measurements: the -5V rail is functioning normally, but the +5V rail measures only around 0.1V. How should I go about troubleshooting to identify which specific section is responsible for the missing +5V?

[detectormods]

How about I put up the schematic for a design built with STM32 , ADC input, demods done inside the processor, auto ground balance, but I would need to get permission from the software engineer as it has adaptive filtering for emi.

[Orbit]

That they definitely have 100n on the positive and negative terminal according to gnd. And tantalum in some places.

[Geotech11]

https://youtube.com/shorts/zpMh56rB2...P00zKYWhw03HdI I played around a bit with adding discrilination on the sd 2000 both channels work fine here is channel 1 on the recording I spent most of my time on noise removal here no noise elimination plug and variable front circuit gain added.

Do the official circuit boards and chip power pins all have decoupling capacitors? I've noticed that schematics almost never include power decoupling capacitors like 100nF.

[Geotech11]

Thought i would share with you all the full schematics i made up for
the M/lab SD2000.Over the years with all the fiddling on the 2000
i did and the resulting hand drawn schematics,why not do the whole
thing and present it to those that have an interest.
I would like to give a special thanks to the people that helped me
identify some of the chips,with out there input many chips would
still be a mystery.
Drawing schematics is`nt my thing so i hope it looks ok,also i had
to present it in two parts because of the 1meg pdf limit.

Zed....

NOTICE FROM GEOTECH -- PLEASE READ
These schematics may contain design elements which are protected by US and/or Australian patents. Reproducing all or parts of this circuit may violate those patents. Any use of these schematics beyond the purposes of education or modifications to an existing SD2000 should be discussed with Minelab.

Do the official circuit boards and chip power pins all have decoupling capacitors? I've noticed that schematics almost never include power decoupling capacitors like 100nF.

[Geotech11]

I’m not sure whether NP0/C0G capacitors can be directly substituted for film capacitors

[Geotech11]

’ve gone through the comments several times — 66 pages in total — my eyes are almost worn out. I redrew the schematic based on ZED’s drawings and modified the battery level display circuit (CCT). I used a large number of MLCC capacitors and only a few film capacitors in certain sections. I’m not sure whether it will work successfully, but if it does, I will share the files. image widget

[Fazel]

Hi friends, can you email me the sd2000 or 2200 gerber files or pcb file??
[email protected]
thank you

[Orbit]

https://youtube.com/shorts/zpMh56rB2...P00zKYWhw03HdI I played around a bit with adding discrilination on the sd 2000 both channels work fine here is channel 1 on the recording I spent most of my time on noise removal here no noise elimination plug and variable front circuit gain added.

[pechkata]

Do anyone have the audio circuit section minelab SD2000 schematic diagram?

[Fazel]

Hi friends, can you email me the sd2000 or 2100 channel files that work properly?
[email protected]
thank you