Hi I bought 2 of the delta pulse vvv.teknolojiekibi.com with LCD for discrimination.
But it works well.
not stable
no separation of metals
is not sensitive to gold
out of kontol itself
coin of not more than 2cm 20cm
whether they praanje loshikarekteristiki built components.
built parts list: yellow
Status of PCB mounted Delta Pulse 2 by Teknolojiekibi and Published list of parts on the website Teknolojiekibi.com
Comment Designator Quantity
SKALA A1 1
CON2 BESLEME 1 (konektor baterija)
16 TUR BOBIN 1 (namotka-sonda)
TUNE BUTON 1
15nF C1 1
1nF C2 1
10nF C3 1
1,5nF C4, C5, C6 3
220uF C7, C27 2
10uF C8 1
100nF C9, C10, C11, C14, C15, C16, C18, C19, C20, C22, C23, C24, C28 13
100uF C12, C29 2 ( izmeneto C12-10mF)
15pF C13 1
47pF C17 1
10uF C21 1
220nF C25 1
47nF C26 1
10000uF C31 1
UA556 D1 1…(staveno KA556)
4538 D2, D3 2 (staveno HCF4538BE)
LF357 D4 1 (staveno LF356N)
TL062 D5, D6, D7 3 (staveno TL062CN)
LM555 D8 1 (staveno NE555N)
4066 D9, D10 2 (staveno HCF4066BE)
20K GAIN, NOISE, TUNE 3
speaker J2 1
switch J3 1
Signal P1 1
S1 P2 1
S2 P3 1
+ P4 1
- P5 1
V1 P6 1
B P7 1
V2 P8 1
REF P9 1
200K PR1 1 (Trimerot go nema - premosten so zicka)
IRF740 Q1 1 (RBF840)
680K R1 1
6K8 R2, R41, R43 3
47K R3, R21, R22 3
5K6 R4, R31, R35 3
2K2 R5, R20 2 staveno (R5-680 OMI 2W
680R R6 1
15K R7 1
27K R8, R51 2
68K R9 1
100K R10, R11 2
10K R12, R13, R38 3
1K R14, R39, R52 3
820R R15 1
12K R16, R40 2
120K R17, R18 2
4K7 R19, R23, R24, R25, R26, R27, R33 7
56K R28, R36 2
1M R29, R30 2
330R R32, R44 2
22K R34, R42, R50 3
560R R37 1
39R R45 1
2.2R R46 1
8K2 R47 1
2K R48, R49 2 (staveno 2k2) ili 2.2 k omi)
500K SENS 1
100R SES AYAR 1 (staveno 1K-OM)
50K SIGNAL 1
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