Elenco AM/FM Radio Kit - Manual (Page 9)

-8-
ASSEMBLY INSTRUCTIONS
We will begin by installing resistor R43. Identify the resistor by its color and install as shown on page 4. Be
careful to properly mount and solder all components. Diodes, transistors and electrolytic capacitors are
polarized, be sure to follow the instructions carefully so that they are not mounted backwards. Check the box
when you have completed each installation.
Wear safety goggles during all assembly stages in this manual.
Integrated Circuit (IC)
C39 - 470 μ F Lytic
(see Figure C)
Mount on copper side.
C40 - 10
μ
F Lytic
(see Figure B)
C41 - 10
μ
F Lytic
(see Figure B)
C43 - 470 μ F Lytic
(see Figure B)
C44 - .047
μ
F Discap (473)
TP1 - Test Point Pin
(see Figure A)
R45 - 10
Ω
Resistor
(brown-black-black-gold)
R43 - 100 Ω Resistor
(brown-black-brown-gold)
TP2 - Test Point Pin
(see Figure A)
C42 - 10
μ
F Lytic
(see Figure B)
R44 - 47 Ω Resistor
(yellow-violet-black-gold)
U1 - IC Socket 8-pin
U1 - LM386 Integrated Circuit
(see Figure D)
J3 - Jumper Wire
(use a discarded lead)
TP-15 - Test Point Pin (see Figure A)
Lytic Capacitor
Figure B
Be sure that the
negative (short) lead is
in the correct hole on
the PC board.
Warning:
If the capacitor is connected with incorrect
polarity, it may heat up and either leak, or
cause the capacitor to explode.
Figure C
Polarity
mark
+
–
Figure D
r
Insert the IC socket into the PC board with the notch in
the same direction as the marking on the top legend (blue
side). Solder the IC socket into place.
r Insert the IC into the
socket with the notch or
dot in the same direction
as the notch on the socket.
'
Polarity
mark
(–) (+)
0.1 μ F Capacitor
Pin 2
Pin 6
Test Point Pin
Foil side of PC board
(green side)
Figure A
Notch
Notch marking
Dot
Foil side of
PC board
(green side)
Legend side of PC
board (blue side)
C45 - Solder the 0.1 μ F
capacitor across pins 2 & 6
of IC U1 as shown. The
capacitor prevents the IC
from oscillating.