2 x 15 LED STEREO VU-METER

2 x 15 LED STEREO VU-METER
Total solder points: 271
Difficulty level:
beginner 1o 2þ 3o 4o 5o advanced
K4306
2 x 15 LED STEREO VU-METER
•
•
•
•
For visualization of audio signals.
Can be used with Velleman mixing panel.
Use with mixing panels, amplifiers, car audio systems…
Easily connects to the line-level output (LOW INPUT) from any tape
deck, stereo system, or CD player.
• A special input (HIGH INPUT) is provided, so that the unit can directly be connected to the speaker output of most systems*.
• To make it universal, the readout can be set as DOT or BAR indication.
• The supplied display window for vertical or horizontal mounting,
makes the unit very attractive.
• If wanted, the unit can be calibrated by the means of a trim potentiometer.
*NOT SUITED FOR CONNECTION TO HIGH POWER CAR STEREO
SYSTEM
Specifications
•
•
•
•
•
•
•
•
Bar or dot readout.
Scale: -23dB to +5dB, 15 LED’s per channel.
dB-linear division from -4 to +5dB (1dB per led).
Systematically growing steps below -4dB.
Accuracy: ±0.5dB (1KHz).
Frequency range: 20Hz to 30KHz (-3dB).
Three different LED colors: green, orange and red.
Adjustable input sensitivity: 150mV to 5Vrms Low input
1.5V to 50Vrms High input
• Input impedance: 47K Low input / 470K High input
• Power supply: 12 to 15VDC / 300mA
• Dimensions: 150 x 57mm
modifications reserved
PARTLIST
H4306P-ED1
5%
1%
4K7= ( 4 - 7 - 2 - B )
I
P
E
C CODICE CODIGO CODIGO
DE
O COLORE
DE
D
CORES COLORES
E
0
1
2
3
4
5
6
7
8
9
A
B
Nero
Marrone
Rosso
Aranciato
Giallo
Verde
Blu
Viola
Grigio
Bianco
Argento
Oro
Preto
Castanho
Encarnado
Laranja
Amarelo
Verde
Azul
Violeta
Cinzento
Branco
Prateado
Dourado
Negro
Marrón
Rojo
Naranjado
Amarillo
Verde
Azul
Morado
Gris
Blanco
Plata
Oro
COLOR= 2… 5
4K7= ( 4 - 7 - 0 - 1 - 1 )
SF
VÄRI
KOODI
Musta
Ruskea
Punainen
Oranssi
Keltainen
Vihreä
Sininen
Purppura
Harmaa
Valkoinen
Hopea
Kulta
S
DK
N
FÄRG FARVE FARGE
SCHEMA KODE KODE
Svart
Brun
Röd
Orange
Gul
Grön
Blå
Lila
Grå
Vit
Silver
Guld
Sort
Brun
Rød
Orange
Gul
Grøn
Blå
Violet
Grå
Hvid
Sølv
Guld
Sort
Brun
Rød
Orange
Gul
Grønn
Blå
Violet
Grå
Hvidt
Sølv
Guldl
D
FARB
KODE
Schwarz
Braun
Rot
Orange
Gelb
Grün
Blau
Violet
Grau
Weiss
Silber
Gold
GB
F
COLOUR CODIFI-
CODE
CATION
DES
COULEURS
Black
Brown
Red
Orange
Yellow
Green
Blue
Purple
Grey
White
Silver
Gold
Noir
Brun
Rouge
Orange
Jaune
Vert
Blue
Violet
Gris
Blanc
Argent
Or
NL
KLEUR
KODE
C
O
D
E
Zwart
Bruin
Rood
Oranje
Geel
Groen
Blauw
Paars
Grijs
Wit
Zilver
Goud
0
1
2
3
4
5
6
7
8
9
A
B
__________________________________________________________________________________________________________________________________________________________
ASSEMBLY STEPS
Required tools to assemble the kit:
Use a small soldering iron of max. 40W.
Use thin (1mm) solder, do not use any flux.
Use a small cutter to trim the excess wires.
1.
2.
3.
4.
Mount the components against the
PCB surface and
carefully solder the
leads in place.
Obtain cone- shaped,
shiny soldered joints
by heating up the
component leads sufficiently.
This solder joint
gives a bad
connection.
Trim the excess
wires up to the
level of the solder
•
•
•
•
Careless assembly will certainly lead to troubles.
Insert the part, oriented correctly, into its correct holes on the PCB.
Mount the components in the correct order as stated in this manual.
The component values in the diagram are for reference only. The values in this partlist are correct and must be followed.
• Use the boxes q to tick off your progress.
F Before starting to build, also read the general guidelines
3
_______________________________________________________________________________________________________________________________________________________
Assembly
Mount all components onto the PC board.
q
q
q
q
q
q
q
q
q
q
q
For BAR readout mount the JB
jumpers or for DOT readout
mount the JD jumpers.
BAR
DOT
-2
3
q
q
q
q
4
JB1
JB2
JB3
JB4
-10
-8
-6
-4
-3
-2
-1
0d
B
+1
+2
+3
+4
+5
Le
ft
-1
3
-1
3
-10
-8
-6
-4
-3
-2
-1
|
-2
3
0d
B
+1
+2
+3
+4
+5
Le
ft
J1
J2
J3
J4
J5
J6
J7
J8
J9
J10
J11
Rig
ht
2. MODE SELECTION JUMPERS
Rig
ht
1. JUMPERS
| q JD1
| q JD2
|
|
__________________________________________________________________________________________________________________________________________________________
3. DIODES (Check the polarity!)
D...
CATHODE
q
q
q
q
q
q
q
q
q
5. 1% METALFILM RESISTORS
D1: 1N4148
D2: 1N4148
D3: 1N4148
D4: 1N4148
D5: 1N4148
D6: 1N4148
D7: 1N4148
D8: 1N4148
D9: 1N4000...1N4007
R...
q
q
q
q
R1: 3K (3-0-0-1 - 1)
R2: 3K9 (3-9-0-1 - 1)
R3: 3K (3-0-0-1 - 1)
R4: 3K9 (3-9-0-1 - 1)
6. ¼W RESISTORS
R...
4. ZENER DIODE
(Check the polarity!)
CATHODE
q ZD1: 6V2
ZD...
q
q
q
q
q
q
q
q
q
q
q
q
q
q
q
q
R5: 470K (4-7-4 - B)
R6: 47K (4-7-3 - B)
R7: 47K (4-7-3 - B)
R8: 470K (4-7-4 - B)
R9: 47K (4-7-3 - B)
R10: 47K (4-7-3 - B)
R11: 2K2 (2-2-2 -B)
R12: 18K (1-8-3 - B)
R13: 18K (1-8-3 - B)
R14: 2K2 (2-2-2 - B)
R15: 1K (1-0-2 - B)
R16: 1K (1-0-2 - B)
R17: 2K2 (2-2-2 - B)
R18: 2K2 (2-2-2 - B)
R19: 2K2 (2-2-2 - B)
R20: 330 (3-3-1 - B)
5
_______________________________________________________________________________________________________________________________________________________
9. 1W RESISTORS
7. IC SOCKETS
R...
(Check the position of the notch!)
1
IC...
2mm
q
q
q
q
q
q
IC1: 8P
IC2: 8P
IC3: 18P
IC4: 18P
IC5: 18P
IC6: 18P
q R21: 47 (4-7-0 - B)
q R22: 47 (4-7-0 - B)
10. CAPACITORS
C...
8. RESISTOR TRIMMERS
RV...
q RV1: 250K (220K)
q RV2: 250K (220K)
6
q C1: 220n (224 - µ22)
q C2: 220n (224 - µ22)
q C3: 220n (224 - µ22)
__________________________________________________________________________________________________________________________________________________________
11. ELECTROLYTIC CAPACITOR
(Check the polarity!)
C...
+
q
q
q
q
C4: 470µ
C5: 47µ
C6: 47µ
C7: 470µ
12. LED’s (Check the polarity!)
(Mount the LED’s at correct height)
q
q
q
q
q
q
q
q
q
q
q
q
q
q
q
q
q
q
q
LD12: green (5)
LD13: green (5)
LD14: green (5)
LD15: green (5)
LD16: green (5)
LD17: green (5)
LD18: green (5)
LD19: green (5)
LD20: green (5)
LD21: yellow (4)
LD22: yellow (4)
LD23: yellow (4)
LD24: yellow (4)
LD25: red (2)
LD26: red (2)
LD27: red (2)
LD28: red (2)
LD29: red (2)
LD30: red (2)
COLOR = 2...5
13. IC’s
(Check the position of the notch!)
LD...
1
13mm
PIN 1
CATHODE
q
q
q
q
q
q
q
q
q
q
q
LD1: green (5)
LD2: green (5)
LD3: green (5)
LD4: green (5)
LD5: green (5)
LD6: green (5)
LD7: green (5)
LD8: green (5)
LD9: green (5)
LD10: green (5)
LD11: green (5)
q
q
q
q
q
q
IC...
IC1: 741
IC2: 741
IC3: LM3916
IC4: LM3916
IC5: LM3916
IC6: LM3916
7
_______________________________________________________________________________________________________________________________________________________
Mount the unit in a suitable housing or on a suitable panel
14. DRILL PATTERN FRONT PANEL
141.5
21.5
5.4
7
118
15. Mount spacers onto the front panel
6mm M3 COUNTERSUNK-HEAD BOLT
10mm M3 SPACER
LOCK WASHER
6mm M3 COUNTERSUNK-HEAD BOLT
2...3mm FRONTPANEL
SHAKEPROOF WASHER
10mm M3 SPACER
8
47
22.6
7
Ø3.5
__________________________________________________________________________________________________________________________________________________________
16. Mount the PCB onto the front panel
6mm M3 COUNTERSUNK-HEAD BOLT
2...3mm FRONTPANEL
4mm M3 BOLT
SHAKEPROOF WASHER
10mm M3 SPACER
PCB
4mm M3 BOLT
9
_______________________________________________________________________________________________________________________________________________________
Connect the unit to a suitable signal, this can be line level (LOW input)
17. Connecting to a line level output of a preamplifier and connecting a power supply from 12 to 15VDC / 300mA
HI LEFT
LO
TAPE L
OUT
LO
HI RIGHT
R
FROM AUDIO AMPLIFIER
1N4007
12V/300mA
MAINS
+V
+
1000uF/25V
+
12V/300mA
12...15VDC
POWER
SUPPLY
1N4007
MAINS
K4306
12V/300mA
+
1000uF/25V
Connect the unit to a suitable supply voltage between 12VDC and
15VDC, this can be a standard DC adapter. You can also build your
own power supply, see diagram. Use a 2x12V transformer, two rectifier
diodes and a electrolytic capacitor or use a single 12V transformer with
a bridge rectifier and a electrolytic capacitor.
10
__________________________________________________________________________________________________________________________________________________________
Connect to a speaker level (HIGH input)
18. Connecting to a speaker level output and connecting a power
supply from 12 to 15VDC / 300mA
LEFT SPEAKER L+
HI LEFT
LO
L-
INPUT (0)
RRIGHT SPEAKER
R+
LO
HI RIGHT
FROM POWER AMPLIFIER
+V
K4306
1N4007
12V/300mA
1000uF/25V
+
MAINS
+
12V/300mA
12...15VDC
1N4007
MAINS
POWER
SUPPLY
12V/300mA
+
1000uF/25V
Connect the unit to a suitable supply voltage between 12VDC and
15VDC, this can be a standard DC adapter. You can also build your
own power supply, see diagram. Use a 2x12V transformer, two rectifier
diodes and a electrolytic capacitor or use a single 12V transformer with
a bridge rectifier and a electrolytic capacitor.
11
_______________________________________________________________________________________________________________________________________________________
19. Connecting to a car radio
LEFT SPEAKER
L+
L-
HI
LEFT
LO
RIGHT SPEAKER
RR+
LO
HI RIGHT
+V
+12V ANTENNE POWER OUT
K4306
CAR RADIO
REMARK: Do not connect the unit to a high power car booster or car
stereo, this equipment uses isolated ground connection. The connection
to this kind of amplifier can cause permanent damage to the amplifier or
car radio!
20. Connecting into Velleman mixing panel
K4306
RIGHT LEFT
+V LO LO
+V
R
L
L
R -V
+V
EFF MON
VU OUT REC OUT
VELLEMAN K2664
• Adjust the unit sensitivity according to your satisfactions by means of
the trim potentiometer RV1 and RV2.
12
__________________________________________________________________________________________________________________________________________________________
21. PCB
13
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