Fisher Impulse

[Anonymous]

Can anyone tell me about the Fisher pulse induction metal detector? Fisher won't even discuss gold prospecting with it, saying to get one of the gold bugs (vlf?)
I understand it runs 100 hours on a set of batteries. How does it do this? low cps? herz? How deep will it find a nickel?

 

[Anonymous]

JW Fisher is not the manf. of the Fisher Impulse. two different companys.
I answered your post below pertaining to the question on the JW Fisher you asked.
Mr. Bill

 

[Anonymous]

I guess it is the MScope Fisher. That is the model name. Fisher Impulse

 

[Anonymous]

Only the Fisher MScope has that sort of battery life. I think this question came up before and the answer was that the current being sent to the coil was recycled in some way.

 

[Anonymous]

The Impulse is Fisher Research Lab, not JW Fishers. The flyback current is returned to the DC power supply rather than being dissipated as heat, greatly reducing power consumption.
--Dave J.

 

[Anonymous]

Why don't all detectors have this feature?

 

[Anonymous]

In January, thanks to the collaboration of a handful of engineers right here on this forum, the technology of power conservation in pulse induction metal detectors was broadened far beyond what's in the Impulse.
Since the approach we developed here is superior to the older methods on nearly every point other than cost, in time nearly all PI units will incorporate it. That's my opinion on the matter anyhow.
Wouldn't be surprised if the new Garrett Infinium incorporates the power conservation technology that we developed here. So far a post a few days ago asking about that has gone unanswered. About time to take the question to the Garrett forum.
--Dave J.

 

[Anonymous]

The Infinium battery life is 10-15 hours, so it doesn't look like they used the new technology.