ASSEMBLE COMPONENTS TO THE PC BOARD
-5-
Figure D
Diodes have polarity.
Mount them
with the band in the correct direction,
as shown on the PC board.
Figure B
Electrolytic capacitors have polarity.
Be sure to mount them with the
negative (–) lead (marked on side) in
the correct hole.
Polarity
Marking
A1 - Buzzer (see Figure A)
C1 - 47
µ
F Electrolytic Cap.
(see Figure B)
SCR1 - SCR (106B1)
D1 - 1N4001 Diode
(see Figure D)
R2 - 39k
Ω
5% 1/4W Resistor
(orange-white-orange-gold)
C2 - .1
µ
F (104) Mylar Cap.
D2 - 1N4001 Diode
(see Figure D)
(–)
(+)
Figure A
The buzzer in your kit may be one of any four types which require
different assembly procedures as follows:
1.
(Buzzer with three lugs on back) - Solder a 4” blue wire and a 4” black wire to A1 on the PC
board. Solder the black wire to the (–) lug. Solder the blue wire to the (+) right lug (see
Figure A1).
2.
(Buzzer with one wire and lug on back) - solder a 4” blue wire to the lug. Insert the two wires
from the buzzer into the PC board, as shown on the top legend.
3.
(Buzzer with two wires - no bracket on back) - connect wires to the PC board with the black
wire as shown in the diagram to the right.
4.
(Buzzer with bracket on back) - remove the white wire with cutters. Solder a 4 inch wire to
one of the bracket lugs. Connect the 4 inch wire and the black wire as shown above.
5.
(Buzzer with one wire) - a screw and lug are needed for the assembly as shown in the
diagram to the right.
Solder and cut off the excess leads.
Blue
Black
Black
Red
Blue
B1 - Battery Snap -
Insert the red
and black wire through the hole in the PC
board as shown. Install the red wire into
the positive (+) hole and the black wire into
the negative (–) hole. Solder and cut off
the excess leads.
S1 - Slide Switch
R1 - 39k
Ω
5% 1/4W Resistor
(orange-white-orange-gold)
Install the wire for the alarm
switches S2 and S3 in the places
shown on the top legend. Solder
them to the circuit board and cut
off the excess leads. S2 is the
normally closed switch, therefore,
connect the two contacts together
by twisting the exposed wires
together.
Since S3 is the
normally open switch, make sure
that these two contacts are left
unconnected.
Black
Blue
Figure C
Mount the SCR in the same direction as marked on
the PC board. Be sure that the metal backing is in the
direction shown.
Metal
Backing
With Beveled Edge