Tiny metal detector ( from pulsdetektor )

[silver]

Hi
any useful info about TINY MD are welcome...

http://www.pulsdetektor.de/html/tiny.html

regards

[bernte_one]

did you have a look at the layout, shematic, partlist?

http://www.pulsdetektor.de/html/tiny.html


what Infos do you Need exactly?

you can Change the coil Driver fet by a newer model from irf9640 (lower on resistance - more power on coil)
use a variable wire pot as damping resistor (500R)

dont use liy litz wire for the coil use yv massive core wire 0,5mm

[silver]

did you have a look at the layout, shematic, partlist?

http://www.pulsdetektor.de/html/tiny.html


what Infos do you Need exactly?

you can Change the coil Driver fet by a newer model from irf9640 (lower on resistance - more power on coil)
use a variable wire pot as damping resistor (500R)

dont use liy litz wire for the coil use yv massive core wire 0,5mm

yes i have but i can not understand german language !
i am lookung for any modification on TINY MD...
are the pcb correct?! or have any error?
have you any new pcb file in LAY format?
what is the liy litz or yv?!! can you show me by photo?

[silver]

!!! ...................... !!!

[Toros]

!!! ...................... !!!

Silver, try this! But first check the lay!

[silver]

Silver, try this! But first check the lay!

thank yoy Toros
i"m working on original pcb from pulsdetektor.de but there is something obscure for me!
such as R3 value! 1K or 10K?!?
what is blak resistor in pcb? jumper or 0 ohm resistor or other thing?!

[Toros]

Black resistors are bridge (zero ohm). In original "Bauteileliste" R3 is 1 k. Black L1 is a coil!

[silver]

thanks my friend

[bernte_one]

Transistoren [Q]:
[Q1] -------- MTP2P50E (PMos/500V) irf 9640 besser
[Q2 / Q3] --- BC547
[Q4] -------- BC557

IC`s [U]:
[U1 / U8] --- NE555
[U2] -------- LF357
[U3] -------- HEF4053
[U4] -------- TL082
[U5 / U6] --- HEF4528
[U7] -------- LF356
[U9] -------- CNY17
[U10] ------- ICL7660
[U11] ------- 78L08

Dioden [D]:
[D1] -------- 1N4007
[D2 / D3] --- 1N5817 (Schottky)

Kondensatoren [C]:

-Vielschichtkondensatoren (Ker. = Keramik):
[C9 / C7] --- 3,3nF
[C18] ------- 330pF = 0.33nF

-Folienkondensatoren (Mks):
[C2 / C10 / C11] ------------- 10nF
[C3] ----- ------------------- 33nF
[C4 / C5 / C6 / C16 / C17] --- 100nF
[C8] ---- ---- ----- --------- 47nF

-Elekrolytkondensatoren:
[C1] ---------- 4700yF-10000yF / min. 16V (nehmt den 10000yF!!!)
[C13 / C12] --- 47yF / 16V
[C15 / C14] --- 470yF / 16V

Widerstände [R]:

[R1] ------------------------------------ 2K - 2,2K / Metallfilm / 2W
[R2 / R3 / R4 / R26 / R28 / R33] -------- 1K / Metallfilm
[R11 / R12 / R21 / R22 / R23 / R25 / R35] --- 10K
[R8 / R13 / R14] ------------------------ 1M = 1000K
[R19 / R20 / R24] ----------------------- 15K
[R30 / R31] ----------------------------- 22K
[R15 / R16] ----------------------------- 2,2M = 2200K
[R7 / R10] ------------------------------ 560
[R5] ------------------------------------ 68K
[R6] ------------------------------------ 5,6K
[R9] ------------------------------------ 50K / Trimmer
[R17] ----------------------------------- 4,7K
[R18] ----------------------------------- 150K
[R27] ----------------------------------- 100K
[R29] ----------------------------------- 22
[R32] ----------------------------------- 220
[R34] ----------------------------------- Poti 10k mit Schalter besser 10gang poti