Velleman K2572 Assembly instructions
Total solder points: 42
Difficulty level: beginner 1 2 3 4 5 advanced
UNIVERSAL STEREO PRE - AMPLIFIER
K2572
r
e
i
f
i
l
p
m
a
e
r
p
e
s
L
b
o
t
ILLUSTRATED ASSEMBLY MANUAL H2572IP-1
s
t
s
o
o
m
i
s
l
l
a
i
o
n
w
o
.
s
l
a
n
g
Features & Specifications
Specifications:
Power supply: 10 - 30V DC maximum, stabilized.
Current abs orption with out charge : typ. 5mA.
Adjustable gain : 40dB max.
Frequenc y range : 40H z - 30KHz (-3dB).
Output impedance : 1KΩ.
Max. Input voltage : 50mVrms (500mVrms)
Dimensions : 44 x 65mm / 1,7” x 2,6”.
2
IN-L
IN-R
6
R2
C7
4
3
C6
7
8
R1
5
R6
R5
C4
2
3
A1,A2 = IC1
C1
+V
R3
1
A1
C2
C7
2
C3
RV2
OUT-L
1
C5
9
OUT-R
10
RV1
R4
+V
6
8
7
A2
5
4
Assembly hints
0
.
0
0
0
1. Assembly (Skipping this can lead to troubles ! )
Ok, so we have your attention. These hints will help you to make this project successful. Read them carefully.
1.1 Make sure you have the right tools:
• A good quality soldering iron (25-40W) with a small tip.
• Wipe it often on a wet sponge or cloth, to keep it clean; then apply solder to the tip, to give it a wet look. This is called ‘thinning’ and will
protect the tip, and enables you to make good connections. When solder rolls off the tip, it needs cleaning.
• Thin raisin-core solder. Do not use any flux or grease.
• A diagonal cutter to t rim excess wires. To avoid injury when cutting excess l eads, ho ld the le ad so they
cannot fly towards the eyes.
• Needle nose pliers, for bending leads, or to hold components in place.
• Small blade and Phillips screwdrivers. A basic range is fine.
For some projects, a basic multi-meter is required, or might be handy
1.2 Assembly Hints :
⇒ Make sure the skill level matches your experience, to avoid disappointments.
⇒ Follow the instructions carefully. Read and understand the entire step before you perform each operation.
⇒ Perform the assembly in the correct order as stated in this manual
⇒ Position all parts on the PCB (Printed Circuit Board) as shown on the drawings.
⇒ Values on the circuit diagram are subject to changes.
⇒ Values in this assembly guide are correct*
⇒ Use the check-boxes to mark your progress.
⇒ Please read the included information on safety and customer service
* Typograp hical inac curacies excl uded. Al ways look for possi ble last minute manual updates, in dicated as ‘NOTE’ o n a separat e leafl et.
3
Loading...