King Cobra PCB

[kt315]

MODE switch

[Legaucho]

Hello kt315
Many thanks, I have a better view now. Super

[kt315]

SPDT switch with one side momentary (ON-OFF-MOM) can be used

I give a related clipping from HAMMERHEAD Pulse induction metal detector, the article of Carl-NC. page 6.


To easily switch between motion mode and zero-motion mode, the PCB includes pads for a panel-mounted switch. The mode switch should either be a momentary-contact pushbutton switch located for easy thumb access, or a momentary toggle switch for index finger control. If a CMOS opamp is used for IC8, then a SPDT switch with one side momentary (ON-OFF-MOM) can be used, similar to the mode trigger used on White’s brand detectors.

[kt315]

I made a mod you see. Did put a connector for charger in box, it is easy to charge now the batts. So all are ready to make some tests. regards

[Legaucho]

Hello all,

My King Cobra works fine now, my problems were due to a few deffect components . For All Metal Mode function I removed the capacitors C7 and C8. I use the King Cobra with Tesoro searchcoil 9'' X 8''
The caracteristics of the Tesoro 9'x 8' concentric coil:

RX = 6.54mH ( 24.9 Ohms )
TX = 6.03mH ( 26.1 Ohms ).

Many thanks again KT315 and Eduardo

[Legaucho]

Hello kt315

Do you have an idea to reduse the sound speaker on King Cobra? Thanks by advance

[kt315]

Hi Legaucho, do you mean to decrease the sound level? You can increase R77 value or/and can also to desolder R76 out, in my opinion this way has to work.

all the best

[Legaucho]

Thanks kt315, I will try it.

[kt315]

New PCBs' bunch has been arrived. Anyone may order the TGS un-Light Advanced, ie TGSULA, board.

all the best

[Legaucho]

New PCBs' bunch has been arrived. Anyone may order the TGS un-Light Advanced, ie TGSULA, board.

all the best

[ATTACH]21691[/ATTACH][ATTACH]21692[/ATTACH]

Hello kt315,

Looks beautiful, can you give us the price and show the complete picture.

kind regards

[kt315]

I found this some kinda a sample in epoxy of soldered pad's sclice in the pocket. It gives a representative I bielieve of you can appreciate a quality.

[kt315]

[kt315]

Hello kt315,

Looks beautiful, can you give us the price and show the complete picture.

kind regards

Hello, Legaucho,
thank you for the feedback. ... awaited the sun on my side for good photo...
the complete pics in high resolution http://www.avral.ru/5cbd19f9e2073bb4b880ab967d81d5a1

have a nice day

[kt315]

sunday's just for fun pic

[kt315]