Velleman K8060 Manuale utente

200W DISCRETE POWER AMPLIFIER

K8060

ILLUSTRATED ASSEMBLY MANUAL H8060IP-1

Total solder points: 74

Difficulty level: beginner 1 2 3 45 advanced

Idealforactivespeakersystemor

subwoofer,guitaramp, hometheatre

systems,instrumentamp,etc.

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

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

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 !

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

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

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.

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

• 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

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

Indice

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