Velleman K4005B Manual de usuario

Total solder points: 264

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

400W MONO/STEREO AMPLIFIER

ILLUSTRATED ASSEMBLY MANUAL H4005B-IP-2

K4005B

Universal,robustandcompactarethewordsto

describethisamplifier.

Specifications:

• Input impedance : 22kohm .

• Input sensitivity : 150mV, 300mV or 950mV switchable .

• Supply voltage for 8 ohm : + 35 to 40VDC and - 35 to 40VDC / 2.5A.

• Supply voltage for 4 ohm or mono: + 25 to 30VDC and - 25 to 30VDC/ 5A

• Dimensions : 350 x 62 x 85mm (13.8" x 2.5" x 3.4").

modifications reserved

Features:

 Rms output power : 2 x 100W / 4ohm ; 2 x 75W / 8ohm.

 Rms mono-bridged power : 200W / 8ohm.

 Total music output : 400W.

 Harmonic distortion : 0.003% at 1KHz.

 Signal-to-noise ratio : 96dB (A-weighted).

 Stereo channel separation : 76dB.

 Damping factor (at 100Hz) : > 2000.

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 l eads,

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

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 !

Assembly hints

DO NOT BLINDLY FOLLOW THE ORDER OF THE

COMPONENTS ONTO THE TAPE. ALWAYS CHECK

THEIR VALUE ON THE PARTS LIST!

Construction

 R1 : 22K (2 - 2 - 3 - B)

 R2 : 22K (2 - 2 - 3 - B)

 R3 : 22K (2 - 2 - 3 - B)

 R4 : 22K (2 - 2 - 3 - B)

 R5 : 22K (2 - 2 - 3 - B)

 R6 : 22K (2 - 2 - 3 - B)

 R7 : 22K (2 - 2 - 3 - B)

 R8 : 2K2 (2 - 2 - 2 - B)

 R9 : 1K8 (1 - 8 - 2 - B)

 R12 : 47K (4 - 7 - 3 - B)

 R13 : 120K (1 - 2 - 4 - B)

4. 1/4W Resistors

R...

 J : 8X

Choice between different input sensitivities :

 Mount the jumpers JH for a sensitivity of 950mV.

 Mount the jumpers JM for a sensitivity of 500mV.

 Leave both jumper connections OPEN for a sensitivity of 150mV.

 A bipolair THREE POSITION switch may be mounted here as well!

Choice between stereo or mono :

 Mount the jumpers JS for a stereo amplifier.

 Mount the jumpers JB for a mono-bridged amplifier.

 Here a unipolar change-over switch may be mounted as well!

1. Jumpers

JH JM

JB JS

 D1 : 1N5404

 D2 : 1N5404

2. Diodes. Watch the polarity!

D...

CATHODE

 ZD1 : 15V0

 ZD2 : 15V0

3. Zener diodes. Watch the polarity!

ZD...

CATHODE

 C1 : 15pF

 C2 : 15pF

 C3 : 100pF (101)

 C4 : 100pF (101)

 C5 : 100pF (101)

 C6 : 100pF (101)

 C7 : 100pF (101)

 C8 : 100pF (101)

 C9 : 150pF (151)

 C10 : 150pF (151)

 C11 : 150pF (151)

 C12 : 150pF (151)

 C13 : 1n2 (122)

 C14 : 1n2 (122)

 C15 : 100nF (104, µ1)

 C16 : 100nF (104, µ1)

 C17 : 100nF (104, µ1)

 C18 : 100nF (104, µ1)

9. Ceramic Capacitors

C...

Construction

 R10 : 7K5 (7 - 5 - 0 - 1 - 1)

 R11 : 20K (2 - 0 - 0 - 2 - 1)

5. Metal film resistors

R...

 R14 : 68K (6 - 8 - 3 - B)

 R15 : 220K (2 - 2 - 4 - B)

 R16 : 1K5 (1 - 5 - 2 - B)

 R17 : 1K5 (1 - 5 - 2 - B)

 R18 : 560 (5 - 6 - 1 - B)

 R19 : 560 (5 - 6 - 1 - B)

 R20 : 2K7 (2 - 7 - 2 - B)

 R21 : 2K7 (2 - 7 - 2 - B)

 R22 : 100K (1 - 0 - 4 - B)

 R23 : 470K (4 - 7 - 4 - B)

 R24 : 10K (1 - 0 - 3 - B)

 R25 : 33 (3 - 3 - 0 - B)

 R26 : 33 (3 - 3 - 0 - B)

 R27 : 33 (3 - 3 - 0 - B)

 R28 : 33 (3 - 3 - 0 - B)

 R29 : 390 (3 - 9 - 1 - B)

 R30 : 390 (3 - 9 - 1 - B)

 R31 : 390 (3 - 9 - 1 - B)

 R32 : 390 (3 - 9 - 1 - B)

 R33 : 1K (1 - 0 - 2 - B)

 R34 : 1K (1 - 0 - 2 - B)

 R35 : 1K (1 - 0 - 2 - B)

 R36 : 1K (1 - 0 - 2 - B)

6. 1W resistors.

R...

 R37 : 0,1

 R38 : 0,1

 R39 : 0,1

 R40 : 0,1

7. 5W resistors.

R...

2mm

 IC1 : 8p

 IC2 : 20p

8. IC sockets.

 T1 : E, B & C

 T2 : E, B & C

 T3 : E, B & C

 T4 : E, B & C

 TS : if a therminal protection is to be

connected.

10. PCB tabs.

Assembly

 F1 : 6,3A “slow”

 F2 : 6,3A “slow”

11. Fuse holders + Fuses

 C21 : 1µF/63V

 C22 : 1µF/63V

12. Capacitors

 C19 : 0,47µF

 C20 : 0,47µF

 C23 : 2µ2

 C24 : 4µ7

 C25 : 4µ7

 C26 : 22µF

 C27 : 22µF

 C28 : 100µF

 C29 : 100µF

 C30 : 100µF

 C31 : 100µF

 C32 : 220µF

 C33 : 220µF

 C34 : 220µF

 C35 : 220µF

 C36 : 4µ7

14. Electrolytic capacitors.

Check the polarity!

C...

 -LS

 +LS

 GND : 3x

 +V

 -V

13. Spade connectors

SK...

F...

 LD1 : 5mm red.

 LD2 : 5mm red.

15. Led’s. Watch the polarity!

CATHODE

20mm

LD...

For stereo use :

 Left input

 Right bridge input

For mono-bridged use :

 Right bridge input

16. Cinch connector(s)

 IC1 : TL072

 IC2 : TDA7250

17. IC’s. Watch the position of the

notch!

 Resistors R41 & R42 and capacitors C37 & C38

are not being used!!!

 Slide the PCB in the largest slot of the heat sink. (See fig. 1.0)

 Note : If the optional thermal protection is used, a hexagonal bolt should be slit into the mounting slot,

and into the hole in the P.C.B. Then the THERMIC may be mounted on the heat sink and its terminals

may be connected to the positions TS (see Fig. 2.0).

 Position the P.C.B. in the middle of the heat sink.

18. Mount the PCB in the heat sink

FIG. 2.0

FIG. 1.0

PCB mounting

Two transistors are mounted at both ends of the heat sink (for their positions refer to Fig. 3.0).

 T1 & T2 : TIP142 of motorola!

 T3 & T4 : TIP147 of motorola!

FIG. 3.0

 Bend the connections of each transistor as in Fig. 4.0.

 Put them in the correct position on the heat sink and against the P.C.B., mark the place of the

transistors.

 Apply a drop of thermally conductive paste to the points where the transistors will be mounted

(Fig 5.0).

 Put an insulating mica on the drop of paste.

19. Power transistors

Power transistors

FIG. 4.0

thermally conductive paste

FIG. 5.0

 Apply a drop of paste on each transistor and put them in the correct position on the heat sink and

against the P.C.B. Make sure the correct type of transistor is placed in the correct position

(T1...T4).

 Fix the transistors well in place by means of the supplied plate and a hexagonal bolt, which is slit

into the slot in the heat sink (see Fig. 6.0). Make sure the transistor connections do NOT TOUCH

the metal plate!

 Now the transistors may be soldered to the corresponding print pins.

FIG. 6.0

Power transistors

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