Announcement
Collapse
No announcement yet.
Tiny metal detector ( from pulsdetektor )
Collapse
X
-
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
-
Originally posted by bernte_one View Postdid 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
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?
Comment
-
-
Black resistors are bridge (zero ohm). In original "Bauteileliste" R3 is 1 k. Black L1 is a coil!Attached Files
Comment
-
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
Comment
Comment