Instructions

ManualsBrandsWhadda ManualsEducation & Development Kitsstereo VU meter 2 x 10 LEDs

Total solder points: 186

Difficulty level:

Beginner 1o 2þ 3o 4o 5o Advanced

PARTLIST H4305P-ED1

K4305

2 x 10 LED STEREO VU METER

• For instant visualization of audio signal levels.

• Easy hook up to a LINE level ( LOW input) signal source.

• For use with mixing panels, amplifiers, CD players, radio’s, ...

• A special input (HIGH INPUT) is provided, which allows direct con-

nection to a SPEAKER* output .

• DOT or BAR display mode selectable to suit your application.

• Attractive display window supplied, which can be used both horizontal

as vertical.

• If wanted, the unit can be calibrated by means of a trim potentiometer.

*NOT SUITED FOR CONNECTION TO HIGH POWER CAR STEREO

SYSTEM

Specifications:

• 2 X 10 LED’s

• BAR OR DOT MODE

• INDICATION RANGE: 0dB = 0.775mVrms.

-20dB, -10dB, -7dB, -5dB, -3dB, -1dB, 0dB, +1dB, +2dB, +3dB

• FREQUENCY RANGE: 20Hz tot 30KHz

• LOW INPUT FOR 0dB: 150mV to 6Vrms (47K)

• HIGH INPUT FOR 0dB: 1.5V to 60Vrms (470K).

• POWER SUPPLY: 10 to 15VDC / 250mA max.

• PCB DIMENSIONS 2X: 68X37mm

modifications reserved

Summary of content (14 pages)

PAGE 1
Total solder points: 186 Difficulty level: Beginner 1o 2þ 3o 4o 5o Advanced K4305 2 x 10 LED STEREO VU METER For instant visualization of audio signal levels. Easy hook up to a LINE level ( LOW input) signal source. For use with mixing panels, amplifiers, CD players, radio’s, ... A special input (HIGH INPUT) is provided, which allows direct connection to a SPEAKER* output . • DOT or BAR display mode selectable to suit your application.
PAGE 2
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
PAGE 3
__________________________________________________________________________________________________________________________________________________________ ASSEMBLY STEPS Required tools to assemble the kit: A small soldering iron of max. 40W. Thin (1mm) solder, do not use any flux. A small cutter to trim the excess wires. 1. 2. 3. 4. Mount the components against the PCB surface and carefully solder the leads. Obtain cone- shaped, shiny soldered joints by heating the component leads sufficiently.
PAGE 4
_______________________________________________________________________________________________________________________________________________________ Assembly Mount all components onto the PC boards (mount the two boards) 1. JUMPERS 2. DIODES (Check the polarity) CATHODE D... q D1: 1N4148 q D2: 1N4148 q D3: 1N4000… 1N4007 4 3.
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__________________________________________________________________________________________________________________________________________________________ 4. ¼W RESISTORS 6. RESISTOR TRIMMERS R... q q q q q q q RV... q RV1: 220K (250K) R1: 47K (4-7-3-B) R2: 47K (4-7-3-B) R3: 330 (3-3-1-B) R4: 10K (1-0-3-B) R5: 10K (1-0-3-B) R6: 2K2 (2-2-2-B) R7: 470K (4-7-4-B) 7. CAPACITORS C... 5. IC SOCKETS (Check the position of the notch) q C1: 220nF (0.22µF, 224) q C2: 220nF (0.22µF, 224) 8.
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_______________________________________________________________________________________________________________________________________________________ 9. 1W RESISTORS R...
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__________________________________________________________________________________________________________________________________________________________ 10. MOUNT THE LEDs, BEND THE LEADS CAREFULLY (Check the polarity) LED SOLDER SIDE PCB COLOR = 2...5 LD...
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_______________________________________________________________________________________________________________________________________________________ 11. Insert the IC’s in the socket (Check the position of the notch) 1 PIN 1 IC... q IC1: 741 q IC2: LM3916 Mount the units in a suitable housing or on a suitable panel: 12. Mounting possibility: A.
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__________________________________________________________________________________________________________________________________________________________ B. Make the holes in the housing or panel and mount the bracket: 7 15 7 4.5 Ø3.5 52 60 10mm M3 COUNTERSUNK-HEAD BOLT 2...
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_______________________________________________________________________________________________________________________________________________________ C. Mount the PCB’s with spacers onto the bracket: M3 NUT LOCK WASHER FRONTPANEL 15mm SPACER 15mm SPACER BRACKET 2...
PAGE 11
__________________________________________________________________________________________________________________________________________________________ Connect the unit to a suitable signal, this can be line level (LOW input) : 13. Connecting to a line level output (tuner, preamp, cd player… ) and connecting a power supply from 10 to 15VDC / 250mA max.. HIGH IN LOW IN + HIGH IN LOW IN + LEFT P4304 L TAPE OUT R RIGHT FROM AUDIO AMPLIFIER 1N4007 12V/250mA MAINS P4304 + 1000uF/25V + 10...
PAGE 12
_______________________________________________________________________________________________________________________________________________________ Connect the unit to a speaker output (HIGH input): 14. Connecting to a speaker level output and connecting a power supply from 10 to 15VDC / 250mA max.. SPEAKER LEFT HIGH IN LOW IN + HIGH IN LOW IN + LEFT P4304 - + INPUT (0) SPEAKER RIGHT + - RIGHT FROM POWER AMPLIFIER 1N4007 12V/250mA MAINS P4304 + 1000uF/25V + 10...
PAGE 13
__________________________________________________________________________________________________________________________________________________________ Connect the unit to a car radio: 15. Connecting to a speaker output from a regular car radio. HIGH IN LOW IN LEFT + LEFT SPEAKER P4304 L+ L- RIGHT SPEAKER R+ R- +12V ANTENNE POWER OUT CAR RADIO HIGH IN LOW IN RIGHT + P4304 The 12VDC car battery power or car radio antenna output can be used to supply the VU meter.
PAGE 14
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