PROBLEM TM808

[pigeon]

HI ALL

CAN YOU HELP US TO SAUVE THIS POBLEMS FOR TM808

THANK YOU ALL

BEST TIME

HAIKEL774 BY BEHNAM

[mikebg]

Pigeon, the RX and TX loops are not placed in induction balance at your experiment.
You should build a rigid coil configuration with adjustable induction balance. Here is a design with adjustable balance:
http://www.geotech1.com/forums/showp...26&postcount=4

[kt315]

the coils in TM-808 are done like the transformers.

first loop of the transformer is a one turn you see as an big antenna-ramka. the turn is_closed galvanically-electrically anywhere on all perimeter. good result you will get if an joint in the loop you will weld of (put the ferrite on the turn before this step!).

second one is winding you see on the ferrite transformer.

[zixelll]

Hi friends please send me the files, thanks to e-mail protel Metal Detector TM 800 [email protected]

[beiduo]

KT Hello, my TM808 pointer does not return to zero. Where should I check? Thank you.

KT Hello, my TM808 pointer does not return to zero. Where should I check? Thank you.

[kt315]

first of all you must know what is ESR, in relation to a capacitor.
buy this tester at second. https://ru.aliexpress.com/item/BSIDE...42e633edRhD9uz
i have transitor tester that can measure ESR but i bought second this - you see i do not spare a money on some useful things.

without that i am not able to suggest you nothing.



you have to have:
- the knowledge
- the instrumentary