GP3500 Voltage Increase?

[Unregistered]

Hello,

Will the GP3500 take a Voltage increase safely & how much of an increase is needed to enhance the detectors depth abillity.

If it can be done safely is it just a matter of changing the voltage regulator?

[Aziz]

Hello,

Will the GP3500 take a Voltage increase safely & how much of an increase is needed to enhance the detectors depth abillity.

If it can be done safely is it just a matter of changing the voltage regulator?

Hi,

I personally wouldn't do this. If ML had a good reason for getting the MD better, they would design at above the specified voltage.

[Unregistered]

The minelab detectors run at 6 volts due to the fact that running any more voltage will breach EMC legislation. You can run the GP3000 series at around 8 volts with an absolute max of 8.5 volts tops. Detector performance improves at 7-7.5 volts. You can run the transmit stage at 24 volts if you want to cut the circuit board and isolate the transmit section from the rest of it, but be warned it is a ***** of a thing to work on.

[steviebam]

Hello, How does the detector performance imrove at 7-7.5 volts on the gp3000? Anyone out there that could do the mod for me? Thanks for any info.

[Unregistered]

You can run any Minelab at 8 volts safely.

[Sean_Goddard]

Amazing how manay times this quetion gets asked, Aziz you have the right answer, yet a few ill informed people out there insits on trying things, contrary to what the designer intended.

From what I see, ALL of these questions seem to originate form UKDN members. I have to say the admin there are not very knowlegable about electronics (or much else for that matter) and seem to encourage this sort of thing.

My advice to ALL UKDN members wishing to "up" the voltage of their detectors, is that it is perfectly safe to connect a 12V car battery to your detector, BUT only if you can handle the HUGE increase in power you will be getting for doing do. Far better may I suggest a 240V portable generator. Don't forget to do this whilst standing in a metal bucket full of salty water that is VERY well earthed!

And for the EXTREME enthusiasts, a kite using wire instead of string (mind you wet string will do) in a thunderstorm produces spectacular results!!

Can we just IGNORE any further of these questions please. There really is no point in doing this sort of thing and it has been covered at lest ten times on this forum before, ALWAYS with the same results.

[ZED]

Cant see the point in increasing the supply voltage,the large pulse is regulated at 5 volts and the small pulses are regulated at 15 volts so increasing the supply voltage to the detector wont drive any more current into the coil,SD detectors are a different story but the GP range are all regulated.

Zed