Velleman K8060 Manual de usuario
200W DISCRETE POWER AMPLIFIER
K8060
ILLUSTRATED ASSEMBLY MANUAL H8060IP-1
Total solder points: 74
Difficulty level: beginner 1 2 3 45 advanced
Idealforactivespeakersystemor
subwoofer,guitaramp, hometheatre
systems,instrumentamp,etc.
2
Specifications:
Excellent value for money
Full discrete design using Epitaxial Darlington transistors
DC supply circuit on board with LED indication
Ideal for active speaker system or sub woofer, guitar amp, home theatre systems, instruments amp….
Comes complete with transistor isolators, spacers and bolts
Overload and short circuit protection
Features:
200W music power @ 4 ohm load
100Wrms power @ 4 ohm load
70Wrms power @ 8 ohm load
Distortion: 0.02% @ 1KHz/10W
Damping factor: >800
Frequency response: 3Hz to 200KHz (-3dB)
Sensitivity: 0.6Vrms
Signal to noise ratio: 115dB
Power supply: 2 x 25-30Vac / 100 - 120VA
PCB dimensions: 107x62mm (aprx.) :
Recommended power transformer: 12030
Recommended heat-sink: HSVM100 (pre-drilled) or S44/75 (not drilled)
Features & Specifications
3
Assembly hints
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 trim excess wires. To avoid injury when cutting excess leads, hold the lead 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
* Typographical inaccuracies excluded. Always look for possible last minute manual updates, indicated as ‘NOTE’ on a separate leaflet.
0.000
4
Assembly hints
1.3 Soldering Hints :
1- Mount the component against the PCB surface and carefully solder the leads
2- Make sure the solder joints are cone-shaped and shiny
3- Trim excess leads as close as possible to the solder joint
REMOVE THEM FROM THE TAPE ONE AT A TIME !
AXIAL COMPONENTS ARE TAPED IN THE COR-
RECT MOUNTING SEQUENCE !
5
Construction
D1 : 1N4148
D2 : 1N4148
1. Diodes. Watch the polarity !
D...
CATHODE
ZD1 : 9V1
2. Zenerdiode. Watch the
polarity !
R1 : 47K (4 - 7 - 3 - B)
R2 : 100 (1 - 0 - 1 - B)
3. Resistors
R...
CATHODE
ZD...
R3 : 3K3 (3 - 3 - 2 - B)
R4 : 330 (3 - 3 - 1 - B)
R5 : 220 (2 - 2 - 1 - B)
R6 : 47 (4 - 7 - 0 - B)
R7 : 680 (6 - 8 - 1 - B)
R8 : 3K3 (3 - 3 - 2 - B)
R9 : 3K3 (3 - 3 - 2 - B)
R10: 10 (1 - 0 - 0 - B)
R11: 3K3 (3 - 3 - 2 - B)
R12: 1K5 (1 - 5 - 2 - B)
R13: 3K3 (3 - 3 - 2 - B)
R14: 1K8 (1 - 8 - 2 - B)
R15: 1K (1 - 0 - 2 - B)
R16: 47 (4 - 7 - 0 - B)
R17: 220 (2 - 2 - 1 - B)
R18: 33K (3 - 3 - 3 - B)
Cut a piece of 3 pins (fig) of the
pin header and mount it for T6
Cut a piece of 6 pins and
mount it for T7
Cut a piece of 6 pins and
mount it for T8
4. Transistor connections
6
Construction & connection
C1 : 47pF (47)
C2 : 47pF (47)
C3 : 47pF (47)
C4 : 680pF (681)
C5 : 680pF (681)
C6 : 47nF (473)
C7 : 100nF (104)
C8 : 100nF (104)
6. Capacitors.
C...
LD1 : Red
9. LED. Watch the polarity!
LD...
CATHODE
T1 : BC640
T2 : BC640
T3 : BC639
T4 : BC547B
T5 : BC557B
8. Transistors.
RV1 :1K
7. Trim potentiometer
RV1
IN
GND
10. PCB tabs.
LS+
LS-
AC (2x)
AC-0 (2x)
12. PCB terminals
C9 : 10µF
C10 : 100µF
C11 : 470µF
11. Electrolytic Capacitors.
Watch the polarity !
C...
D3 : 1N5404
D4 : 1N5404
D5 : 1N5404
D6 : 1N5404
5. Power diodes.
Watch the polarity !
D...
CATHODE
+/-5mm
7
Construction
R19 : 0,47
R20 : 0,47
13. 5W resistors
R...
2mm
C12 : 3300µF
C13 : 3300µF
Hint for tweakers :
Replace the original caps with
4700µF/50V types for even better
performance.
14. Electrolytic Capacitors.
Watch the polarity !
C...
IMPORTANT
Check the complete assembly carefully before
mounting the heat sink.
Once the heat sink is mounted, the solder-side
is no longer accessible.
8
Final Assembly
A custom pre-drilled heat sink is available from your distributor (order code HSVM100).
Any other heat sink must be able to dissipate at least 30W (1.25°C/W) (see fig.1.0).
Use the template as a drill guide.
15. Final assembly
Fig. 1.0
9
• Mount 4 bolts + 8 nuts (PCB support). (fig.2.0)
Final assembly
2 x M3 nut
M3 15mm bolt
• Slide the PCB over the 4 bolts, and fix using 4 nuts
(Fig 3.0).
Fig. 2.0 Fig. 3.0
10
Transistor T6
16. Mounting the transistor T6 on the heat sink:
• Apply a drop of heat conductive compound in the heat sink hole (fig. 4.0).
Fig. 4.0
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