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Velleman-Kit K6727 Manual page 6

Two channel codelock receiver

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Construction
1. Jumper wires
q J1
q J2
2. Diodes
Watch the polarity !
CATHODE
q D1 : 1N4148
q D2 : 1N4148
q D3 : 1N4148
q D4 : 1N4007
q D5 : 1N4007
3. Zener diodes
Watch the polarity !
CATHODE
q ZD1 : 4V3
q ZD2 : 4V7 (5V1)
6
D...
ZD...
4. SAW resonator
(check the position of the notch)
q L1 : 1µH (1-0-B)
5. 1/4W Resistors
q R1: 270
q R2: 18K
q R3: 18K
q R4: 33K
q R5: 5K6
q R6: 2K7
q R7: 6K8
q R8: 6M8
q R9: 1K
q R10: 1K
q R11: 100K (1-0-4-B)
q R12: 100K (1-0-4-B)
q R13: 100K (1-0-4-B)
q R14: 100K (1-0-4-B)
q R15: 10K (1-0-3-B)
q R16: 10K (1-0-3-B)
q R17: 10K (1-0-3-B)
q R18: 10K (1-0-3-B)
q R19: 10K (1-0-3-B)
q R20: 2K2 (2-2-2-B)
q R21: 2K2 (2-2-2-B)
q R22: 2k2
L2
L...
R...
(2-7-1-B)
(1-8-3-B)
(1-8-3-B)
(3-3-3-B)
(5-6-2-B)
(2-7-2-B)
(6-8-2-B)
(6-8-5-B)
(1-0-2-B)
(1-0-2-B)
(2-2-2-B)

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