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Offline tantalTopic starter
Copper Member
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Join Date: Jun, 2011
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Russian Federation
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390.00 Gold
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« on: August 12, 2012, 02:43:15 am »
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 Hello Hi PCB did delta pulse under this scheme but

is not sensitive to gold coins and more than 20 cm

to change the PCB circuit and be sensitive to coins and therefore that winding to do.

Inquiry eletrichna pattern and assembly for example.
spektar2007@yahoo.com   Detecting
Comment Designator Quantity
SKALA A1 1
CON2 BESLEME 1
16 TUR BOBIN 1
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
15pF C13 1
47pF C17 1
10uF C21 1
220nF C25 1
47nF C26 1
10000uF C31 1
UA556 D1 1
4538 D2, D3 2
LF357 D4 1
TL062 D5, D6, D7 3
LM555 D8 1
4066 D9, D10 2
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
IRF740 Q1 1
680K R1 1
6K8 R2, R41, R43 3
47K R3, R21, R22 3
5K6 R4, R31, R35 3
2K2 R5, R20 2
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
500K SENS 1
100R SES AYAR 1
50K SIGNAL 1
BC546 T2, T4, T5, T6, T7, T8 6
BC557 T3, T9, T10 3
10K TRS HOLD 1
1N4148 VD1, VD2, VD3, VD4, VD5, VD6, VD8, VD9, VD10, VD11, VD12, VD13 12
1N4001 VD7 1
8V2 VD14 1
9V VD15 1
KIRMIZI VD16, VD17 2


Posted on: October 12, 2011, 06:21:46 AM
The solution for this issue already and I'm poznat.t dacvke no need for other opinions.

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