-5-
ASSEMBLE THE FOLLOWING COMPONENTS TO THE PC BOARD
Q1 - 2N3904 Transistor
(see Figure B)
C1 - 10
µ
F Electrolytic
(see Figure C)
Q5 - MPS A70 Transistor
(see Figure B)
C3 - .01
µ
F Discap
C2 - .01
µ
F Discap
(may be marked 103)
Q2 - 2N3904 Transistor
Q3 - 2N3904 Transistor
(see Figure B)
C6 - .001
µ
F Discap
(may be marked 102)
C5 - .01
µ
F Discap
(may be marked 103)
L1 - LED & Spacer
L4 - LED & Spacer
L2 - LED & Spacer
L5 - LED & Spacer
L3 - LED & Spacer
(see Figure D)
Q4 - 2N3904 Transistor
(see Figure B)
C4 - 10
µ
F Electrolytic
(see Figure C)
8-Pin IC Socket
IC1 - 555 IC
(see Figure E)
D1 - 1N4001 Diode
(see Figure F)
SW2 - Switch DPDT
R15 - 100k
Ω
potentiometer
5/16” Lockwasher
7mm Hex pot nut
8mm x 14mm Washer
(see Figure G)
S1 - Transistor socket
(see Figure H)
SW1 - Switch DPDT
Figure G
Figure H
Cut off the mounting tab on the potentiometer (pot). Place a 5/16” lockwasher
onto the shaft of the pot. Insert the shaft of the pot into the hole in the PC
board from the copper side. Position the pot so that the three lugs are above
the three copper pads on the PC board. Secure the pot to the PC board with
the 7mm pot nut and 8mm flat washer. Solder a bare wire (discarded resistor
lead) from the pot lug to the pad directly below on all three lugs.
Bare wire
Pad
Match key on the socket to the top
legend marking on the PC board.
Mount with 1/16” of space between
the socket and PC board.
Key
Cut off tab
Top legend
marking
1/16”
Green copper side
of PC board
