Does your coil click?

Only for the discussion of the Deus Metal Detector.
Post Reply
User avatar
Easylife
Posts: 2361
Joined: Mon Apr 24, 2017 9:23 pm
Has thanked: 368 times
Been thanked: 1148 times

Does your coil click?

Post by Easylife » Tue Apr 17, 2018 8:34 pm

Has anyone ever noticed that the 11” coil makes a little click as you change frequencies or switch to programs using a different frequency? The other coils probably do also. I just noticed this for the first time as I was re-programming the remote but was surprised that the coil itself could make any sound at all, maybe it's some form of electromechanical switching?
You're all going to try this now. :))


Deus V4.1, 11" coil, 9" HF coil & Garrett Carrot. %)=
White's TDI SL

User avatar
Me and my boy
Posts: 1149
Joined: Sun Aug 21, 2016 8:53 pm
Has thanked: 434 times
Been thanked: 420 times

Re: Does your coil click?

Post by Me and my boy » Tue Apr 17, 2018 8:36 pm

Yep mine does too. On v4, don’t know if that makes a difference.
2018 hammies. = 109 (including quarters, halves and broken) not including the Saxon
Saxon = 4
Celtic. = 1
Silver denarius = 1
Gold Roman = 1
Gold ring. = 0

User avatar
Roberts
Posts: 311
Joined: Wed Feb 07, 2018 12:08 pm
Location: Expatriate in France
Has thanked: 294 times
Been thanked: 157 times

Re: Does your coil click?

Post by Roberts » Tue Apr 17, 2018 8:38 pm

Yep my 11" has been clicking everytime that i change frequencys from day 1 ::g, i was worried at first but same as you i put it down to mechanical.. Would be interesting to know what is clicking though :)

EDIT: i use the 3.2 version.
Last edited by Roberts on Tue Apr 17, 2018 8:55 pm, edited 1 time in total.
Image
Deus xp WS4, 11 inch coil, Nokta pinpointer, Solid spade

AndyM
Posts: 177
Joined: Wed Mar 26, 2014 3:33 pm
Location: Canvey
Has thanked: 4 times
Been thanked: 14 times

Re: Does your coil click?

Post by AndyM » Tue Apr 17, 2018 8:49 pm

There's got to be a electronic switching relay in there, at a guess something to do with switching voltage for each frequency. Must be a reliable little relay as never heard of anybody getting one repaired or one failing.

User avatar
Easylife
Posts: 2361
Joined: Mon Apr 24, 2017 9:23 pm
Has thanked: 368 times
Been thanked: 1148 times

Re: Does your coil click?

Post by Easylife » Tue Apr 17, 2018 8:51 pm

Roberts wrote:
Tue Apr 17, 2018 8:38 pm
Would be interesting to know what is clicking though :)
That was my curiosity for posting. Someone electronically minded will know. :D
Deus V4.1, 11" coil, 9" HF coil & Garrett Carrot. %)=
White's TDI SL

Junior
Posts: 868
Joined: Sun Sep 13, 2015 5:53 pm
Has thanked: 162 times
Been thanked: 202 times

Re: Does your coil click?

Post by Junior » Wed Apr 18, 2018 7:15 am

Yep hf coil does as well

Fusion
Posts: 4418
Joined: Thu Sep 16, 2010 11:47 am
Location: Herts
Has thanked: 1 time
Been thanked: 182 times

Re: Does your coil click?

Post by Fusion » Wed Apr 18, 2018 10:29 am

There are two magnetically-latching relays in the coil, which are used to change the tuned frequency of the coil. Being mechanical, they click when switching over. I'm not 100% on the details, but the relay contacts switch in different capacitors that change the frequency the coil is tuned to. The coil windings ( the loop of copper wire ) is the same for all four frequencies. The magnetic latching means they only consume power when actually switching over. After that, magnets hold the switch in position.
They are Axicom IM41 parts:
http://www.te.com/usa-en/product-5-1462037-4.html

Chilgrove
Posts: 254
Joined: Fri Dec 05, 2014 5:14 pm
Been thanked: 41 times

Re: Does your coil click?

Post by Chilgrove » Fri Apr 27, 2018 12:19 pm

These relays must be absolutely tiny.

Fusion
Posts: 4418
Joined: Thu Sep 16, 2010 11:47 am
Location: Herts
Has thanked: 1 time
Been thanked: 182 times

Re: Does your coil click?

Post by Fusion » Sun Apr 29, 2018 1:05 am

They are fairly small, but there's enough room in the Deus coil for them.
For decades, the 'standard' in miniature relays has been the TO-5 packaged relays originally by Teledyne. Very expensive, usually used in Aerospace applications, and for very high frequency radio-signal switching. I've had the 'lid' off one in the past, they are works of art inside. My example was a magnetic-latching one, with two seperate coils for 'set' and 'reset'.
This is a typical version:
https://www.enrgtech.co.uk/buy/product/ET13974967/722-5

Post Reply

Return to “XP DEUS Forum”