Nixie Tube Clock ‘Halo’
Issue 3 (01 Nov 2018)
www.pvelectronics.co.uk
- 6 -
3. LIST OF COMPONENTS
3.1 Table of components
Circuit Designation
Part Description
Resistors
R1, R2
560Ω, ¼ Watt
R3
4.3KΩ, ¼ Watt
R4
620KΩ, ¼ Watt
R5
4.3KΩ, ¼ Watt
R6, R7
560Ω, ¼ Watt
R8, R9
4.3KΩ, ¼ Watt
R10, R11
Not Installed
R12 – R14
4.3KΩ, ¼ Watt
R15 – R17
390KΩ, ¼ Watt
R18 – R20
Not Installed
R21 – R26
2.7KΩ, ¼ Watt
R27, R28
4.3KΩ, ¼ Watt
R29, R30
390KΩ, ¼ Watt
R31 – R36
See below
R37
Not Installed
R38, R39
560Ω, ¼ Watt
Capacitors
C1, C2
100 nF Ceramic
C3
330pF Ceramic
C4
100nF Ceramic
C5
470 µF, 16-25V, Low ESR
C6
33pF Ceramic
C7
100nF Ceramic
C8
1 µF, 250V, Electrolytic
C9
0.1F
C10
100nF Ceramic
C11
33pF Ceramic
C12
15pF, Ceramic
C13
100nF Ceramic
Transistors
Q1
BC639
Q2
BC640
Q3
IRFD220 MOSFET
Q4
Not installed
Q5– Q7
MPSA42
Q8 – Q10
MPSA92
Q11- Q13
MPSA42
Diodes
D1, D2
1N5819
D3
UF4004
D4
5mm Green LED
D5
5mm Yellow LED
Integrated Circuits
IC1
7805 5V Voltage regulator