2
D111677#1
1 2 3 4
8 7 6 5
+ L+
L-
-
100kOhm
470 nF
Input +
220 uF
100 nF
1 uF
Input
208235
1 uF
100 nF
100 kOhm
6
3
470 nF
2
Input 1
+
TDA7052A
4
220 uF
-
+
5
L-
L+
8
1
INSTRUCTIONS
Now add the capacitor 100 nF (Code 104) and the 1 uF Kondensator (Code 105) in the marked places on the board.
Insert the resistor 100 kOhm in the holes in the top of the board and solder it to the tracks underneath.
Next insert the capacitor 220 uF, here the polarity must be noted. It must be inserted the correct way around note the plus and
minus legs. Solder in place underneath!
Check all the capacitors once more , especially the polarity if necessary ,then trim the extra length form the legs underneath
the board
Solder the red battery cable to the plus connection and the black cable to the minus connection on the board.
Die IC holder, is inserted in the top of the board the correct way around and the legs are soldered to the tracks on the bottom
of the board.
NOTE: The IC holder has a notch at one end. This must correspond
with the diagram on the top of the board
The amplifier IC is inserted in the holder once all the other components have been soldered in place to ensure that is not
damaged during the soldering
Insert the 470 nF ceramic capacitor (Code 474) from above. Bend the legs slighty apart underneath the board an solder them
to the tracks.
1. Constructing the circuit board
The circuit board has two different sides. The top side is drilled and printed showing the positions of the components. The
bottom has all the tracks where the components are soldered
Schematic diagram
