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  5. Illustrated Assembly Manual

Velleman K4304 Illustrated Assembly Manual

Manual is about: 10 LED MONO VU METER

Summary of K4304

  • Page 1

    10 led mono vu meter k4304 illustrated assembly manual h4304ip-1 total solder points: 93 difficulty level: beginner 1 2 3 4 5 advanced add a v isual re adout t o your existing or new eq uipmen t..

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    2 features: 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 mo...

  • Page 3

    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 ...

  • Page 4

    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 t...

  • Page 5

    5 construction d1 : 1n4148 d2 : 1n4148 2. Diodes. Watch the polarity ! D... Cathode zd1 : 6v2 3. Zenerdiode. Watch the polarity ! 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...

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    6 ic1 : ua741 ic2 : lm3916 construction c1 : 220nf (224) c2 : 220nf (224) 7. Capacitors. 11. Ic’s. Watch the polarity ! C... R8 : 68 (6 - 8 - 0 - b ) 10. 1w resistor r... 2mm rv1 : 220k (sensitivity) 8. Trim potentiometer c3 : 47µf c4 : 47µf c5 : 47µf 9. Electrolytic capacitors. Watch the polarity !...

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    7 construction remark: depending on your application, these led’s can be mounted perpendicular or parallel (see also points 13 and 14): perperdicular mounting : parallel mounting : 12. Mount the leds (check the polarity) pcb solder side led 13mm solder pcb side led ld1 : green ld2 : green ld3 : gree...

  • Page 8

    8 Ø3.5 52 60 7 4.5 parallel mounting 13. Parallel mounting (optional) (a) make the holes in the housing or panel (fig.1.0) : (b) mount the suitable spacers (fig. 2.0) : 6mm m3 countersunk-head bolt lock washer 10mm m3 spacer frontpanel 2...3mm frontpanel 10mm m3 spacer lock washer fig. 2.0 fig. 1.0

  • Page 9

    9 6mm m3 countersunk-head bolt 4mm m3 bolt 2...3mm frontpanel 10mm m3 spacer 4mm m3 bolt pcb lock washer (c) mount the pcb onto the spacers (fig 3.0) : fig. 3.0 parallel mounting.

  • Page 10

    10 14. Perpendicular mounting (optional) fig. 4.0 (a) make or search for a suitable bracket : (b) make the holes in the housing or panel and mount the bracket (fig. 5.0) : fig. 5.0 perpendicular mounting lock washer m3 nut 10mm m3 countersunk-head bolt bracket frontpanel lock washer m3 nut 2...3mm f...

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    11 15mm spacer 2...3mm frontpanel pcb m3 nut lock washer solder side 20mm m3 bolt 20mm m3 bolt bracket bracket 15mm spacer lock washer m3 nut frontpanel (c) mount the pcb with spacers onto the bracket (fig. 6.0) : fig. 6.0 perpendicular mounting.

  • Page 12

    12 15. Connection to a suitable signal connecting to a line level output (tuner, preamp, cd player… ) and connecting a power supply from 10 to 15vdc / 110ma max.. Connect the unit to a suitable supply voltage between 10vdc and 15vdc, this can also be a standard dc adapter. You can also build your ow...

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    13 12v/150ma 12v/150ma 12v/150ma from power amplifier mains mains speaker out - + input (0) 10...15vdc 1000uf/25v 1n4007 + 1000uf/25v 1n4007 + power supply + low in high in + k4304 16. Connection to a speaker ouput connecting to a speaker level output and connecting a power supply from 10 to 15vdc /...

  • Page 14

    14 17. Connection to a car radio connecting to a speaker output from a regular car radio. The 12vdc car battery power or car radio antenna output can be used to supply the vu meter. Remark: do not connect the unit to a high power car booster or car stereo, this equipment uses isolated ground connect...

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    15 18. Pcb layout pcb & diagram low in gnd c1 220n r1 47k rv1 220k r2 47k ua741 ic1 +v 2 3 4 7 6 d1 1n4148 d2 1n4148 r3 330 +v r4 10k c3 47u 6v2 zd1 c4 47u 5 4 sig rlo 6 rhi ref 7 r6 2k2 r5 10k adj 8 j1 dot/bar +v 9 mode +v 3 2 v+ v- ld2 green 18 -10db ld3 green -7db 17 ld4 green -5db 16 ld5 green -...

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    Modifications and typographical errors reserved © velleman components nv. H4304ip - 2004 - ed1 velleman components nv legen heirweg 33 9890 gavere belgium europe www.Velleman.Be www.Velleman-kit.Com 5 4 1 0 3 2 9 2 8 9 8 9 8.