Velleman K4304 Illustrated Assembly Manual Download Page 14

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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 connection. The connection to this kind of amplifier can cause permanent damage to the
amplifier or car radio!

Fig. 9.0

Connection

+12V ANTENNE POWER OUT

CAR RADIO

SPEAKER OUT

LOW IN

K4304

HIGH IN

Adjust the units sensitivity according to your preference by means of the trim potentiometer RV1

Summary of Contents for 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 visual readout to your existing or new equipment...

Page 2: ...on 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 Specifications 1 X 10 LED s Bar or dot mode In...

Page 3: ...he 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 ha...

Page 4: ...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...

Page 5: ...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 5 Resistors R CATHODE ZD IC1 8p IC2 18p 6 IC sockets Watch the position of the notch J1 J2 mount for BAR mode do not moun...

Page 6: ...struction 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 47 F C4 47 F C5 47 F 9 Electrolytic Capaci...

Page 7: ...endicular 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 green...

Page 8: ...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 10m...

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: ...ke 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 FRONT...

Page 11: ...mm 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 Perpe...

Page 12: ...this can also 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 w...

Page 13: ...eaker level output 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 bu...

Page 14: ...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 ca...

Page 15: ...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 3dB 15 LD6 GREEN 1dB 14 LD7 GREEN 0dB 13 LD8 YELLOW 1dB 12 LD9 YELLOW 2dB 11 LD10 RED 3dB 1...

Page 16: ...ions 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...