Metal detector Detech EDS Reacher

[gae66]

hi can you tell me the value of inductance near the transistor thanks

[gae66]

6-pin code smd LTAF = help
6-pin code smd V719 = help
6-pin code smd A12 = help
5-pin code smd S50 = help

[Skippy]

LTAFJ = Linear Technology LT6230 op-amp
LTAFL = LT6233 op-amp

[gae66]

6-pin code smd LTAF = help
6-pin code smd V719 = help
6-pin code smd A12 = help
5-pin code smd S50 = help

[exzakt]

After a few months of yousign the winner i can say that i am very happy with the gb mod but i have a problem.
i adapted a coil from tesoro tejon, it works perfectly but i loose 20% from the depth.
after google'ing i have discovered that detech winner is 90% the same with troy shaddow x5.
in an older toppic from this forum i have discovered this:

ACQ
Junior Member


Join DateApr 2010Posts2

Hi folks,

Sorry to bring up this old post but I need some help from the gurus. I'm not proficient in electronics so please bear with me.

The thing is it's quite difficult to find good coils for the X5 and seems some people have had some luck using SEF (12x10) coils with the X5. SEF coil pinout is as follows:

SEF
Pin 1 & 2 RX 36,6 ohms
Pin 3 & 4 TX 2,6 ohms.

TROY
Pin 1 & 2 RX 85 ohms
Pin 3 & 4 TX 15 ohms
Not sure of this since my multimeter reads different values

To do this they seem to change C7 capacitor to something around 220nF and I'd like to know if this make any sense to you guys since as I said before I'm not very knowledgeable in electronics.

Thanks
Antonio

the tesoro tejon coil has :

PIN 1 & 2 : 61,8 ohms
PIN 3 & 4 : 4,9 ohms



my quiestion is what SEF coil (12x10) have the specs from the quote above and for whitch unit is it made for, because the specs are exactly the same as for detech eds winner.


best wishes

[reiv]

Hi,enybody knows value of this L choke in transmit, and transistors?