Half Sine Wave Hybrid Detector Technology

[pustareka]

Thanks for all your responses on the half sine wave hybrid technology, I am hoping this hybrid detector, if it ever reaches the market, will not have such complicated coils as say a gpz, too cost prohibitive, etc. Sounds like it may be a viable machine for nugget detecting if something like this hits the market. Most the gold we go after these days in the gold fields is 1/2 gram to 2 gram nuggets at extreme depths, missed by all the older technology machines. Most the easy large gold has already been found since the pi detectors were very good way back on large nuggets, sd 2000 etc. Always looking for new tech, loopholes you might say where undiscovered nuggets can be found. The new flatwire coil have helped a lot in this regard, I am getting an extra 2 inches more on small gold at depth with these new tech coils.

Luk TRY

[green]

Tried simulating half sine with spice. Low TC targets similar to constant rate, 100usec TC target less signal. What might be the reason?

[Tinkerer]

Tried simulating half sine with spice. Low TC targets similar to constant rate, 100usec TC target less signal. What might be the reason?

Half sine current or half sine voltage?

[green]

Half sine current or half sine voltage?

Good question. Looked at simulation again and saw I left Tx on to long. Thought Tx was the same as patent picture but it wasn't. Setting the times right solved the problem. Including a picture of what I had.

Thanks

[Tinkerer]

http://www.geotech1.com/forums/showt...947#post155947

You might like to look at the whole thread

[green]

http://www.geotech1.com/forums/showt...947#post155947

You might like to look at the whole thread

Started reading thread. Looks like some good information. Still don't see how to dump coil discharge back to power supply with a PI detector to improve efficiency. Do you have a simple explanation?

[eclipse]

Aziz posted this 1 month before Whites patent on the forum in 2010. Is the Whites patent "inspired" 1 month after this post?

Phase 3 1/4 sine is capacitor discharge on TX switch on you can ignore that if the capacitor is discharged during TX off so you get very similar picture as Whites am I right?

https://www.geotech1.com/forums/showthread.php?14102-Let-s-made-a-PC-base-metal-detector-with-usb-interface-!!!/page34

https://www.geotech1.com/forums/show...189#post112189

[Carl-NC]

The White's patent was filed in 2002 so, no, I doubt it was inspired by Aziz. Ironically the patent expires next year and was never implemented in a product.

The topic of this thread is "Half-Sine" but it has veered off to energy recycling using kickstart circuits. Which was discussed in this thread:

https://www.geotech1.com/forums/show...y-recuperation

Also see this FTP patent on the same concept:

https://www.freepatentsonline.com/9366778.html