Geiger counter circuit Revised: Friday, July 15, 2011
http://www.ne.jp/asahi/air/variable/ Revision: 0.4
Bill Of Materials July 15,2011 7:40:01 Page1
Item Quantity Reference Part
1 2 CN1,CN2 CON2
2 26 C1,C2,C3,C4,C5,C6,C7,C8, 0.22uF/50V
C9,C10,C11,C12,C13,C14,
C15,C16,C17,C18,C19,C20,
C21,C22,C23,C24,C26,C27
3 2 C28,C25 10uF/16V
4 1 C29 100pF
5 16 D1,D2,D3,D4,D5,D6,D7,D8, 1N4148
D9,D10,D11,D12,D13,D14,
D16,D17
6 1 D15 LM385Z-2.5
7 1 JP1 HEADER 2
8 1 LED1 LED
9 1 L1 10uH/1.96A
10 1 PH1 TLP521-1
11 1 Q1 2SK2962_TOSHIBA
12 2 Q3,Q2 2SC1815
13 14 R1,R2,R3,R4,R5,R6,R7,R8, 5.6M
R9,R10,R11,R12,R13,R14
14 1 R15 10K
15 2 R18,R16 1M
16 3 R17,R20,R22 100K
17 2 R21,R19 220
18 1 TP1 HV_OUT
19 1 TUBE1 D3372_HAMAMATSU
20 1 U1 74HC14
21 1 U2 LMC6482
22 1 VR1 500K(B)
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