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VU-1MK500 VU Meter Kit

Volume Unit Meter

Simplicity Counts, Detail Matters.

No part of this document may be reproduced, either mechanically or electronically, posted online on the

Internet, in whole or in part, without the expressed, written permission of FiveFish Studios. This document is

solely provided to the kit builder of the VU-1MK500 VU Meter Kit.

Last Revision: September 18, 2011

Copyright © 2011 FiveFish Studios

www.fivefishstudios.com

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Содержание VU-1MK500

Страница 1: ...either mechanically or electronically posted online on the Internet in whole or in part without the expressed written permission of FiveFish Studios This document is solely provided to the kit builder of the VU 1MK500 VU Meter Kit Last Revision September 18 2011 Copyright 2011 FiveFish Studios www fivefishstudios com ...

Страница 2: ... Yes I built this Features Advantages and Benefits of the VU 1MK500 VU Meter Kit Built in rectifying amplifiers allow VU Meter operation by AC or DC input Wide display range covering 13dB to 17dB allowing display of signals with wide dynamic range Regulated LED Drive current independent of voltage supply High efficiency crystal clear Red LED indicators for VU Meter display Wide DC power supply vol...

Страница 3: ... free solder 7 Magnifying glass to see what you re doing Especially when soldering IC pins and the Grayhill selector switch 8 Clean and well lighted work area Lots of good lighting clean work area You want to be able to leave your work in progress without packing everything away Extra Tools Nice to have but not required 1 Desoldering pump if you make a mistake you need to pull out the component fr...

Страница 4: ... to read resistor color codes since all the SC 1 parts are already labeled for you But if you re curious on what those bands of wonderful technicolors mean you can go here http www samengstrom com nxl 10116 5_band_resistor_color_code_page en html Capacitors There are two kinds of capacitors used in the VU Meter Kit project We ll discuss the different types here Ceramic Capacitors Ceramic capacitor...

Страница 5: ...d have a maximum voltage rating WARNING It is VERY IMPORTANT not to insert them backwards or in the wrong polarity orientation Doing so may cause the capacitor to explode Do not the let the small size fool you Even a small capacitor can explode with a lot of force All of the electrolytic capacitors used in the VU Meter Kit have polarity Voltage Regulator The VU Meter Kit uses an on board voltage r...

Страница 6: ... LED Light Emitting Diodes LEDs are a special kind of diode that lights up when current goes through it We re using low current high efficiency LEDs for the VU Meter Kit These are crystal clear when OFF and bright RED when turned ON Insert the LEDs with the longer legs on the left side looking at the VU Meter PCB from the front ...

Страница 7: ... you want your LED movement going from LEFT RIGHT Four 4 on board jumpers are provided on the PCB to allow you to change the direction of LED movement display Just move ALL jumpers either to the HORZ or VERT position for Horizontal or Vertical position respectively IC Chip The IC chip used in the VU Meter Kit is a 9 lead SIP Single Inline Package One side of the chip will have a V notch This desig...

Страница 8: ...till flushed to the board straight and not crooked If crooked re heat the leg and straighten with your fingers while the solder is still soft melted DO NOT STRAIGHTEN THE PINS AFTER THE SOLDER BECOMES HARD You d risk ruining the PCB or breaking the part I sometimes use masking tape to hold the component in place on the board while I solder the leads on the other side This is very useful when solde...

Страница 9: ...value 8K 8K2 on parts bag STEP 3 Solder the ceramic capacitor to the PCB The orientation does not matter The ceramic capacitor is located just above the voltage regulator STEP 4 Solder the two electrolytic capacitors Note orientation of leg The negative leads should be as shown in the photo below Note The leads are oriented on top STEP 5 Solder the Voltage Regulator Note the orientation of where t...

Страница 10: ...lder one leg first adjust and straighten if necessary before soldering the rest of the pins NOTE If you re assembling the VU meter kit for use with the SC 1 or X12 Mic Preamp Kit bend the Trimmer leads and solder the Trimmer Resistor laying on it s side STEP 8 Solder the 5 LEDs to the board Bend as shown in the photo below The long leg of the LED goes to the left position Try to make all the LEDs ...

Страница 11: ...ration connect a signal generator to the VU meter input 1Khz adjust output of Signal generator to 1 22Vrms and adjust trimmer resistor until 3rd LED lights up VU 1MK500 Troubleshooting Guide Well hopefully you won t need this part Measure twice cut once as they say Take your time assembling the kit don t be in a hurry work carefully and methodically and you won t need this troubleshooting guide Pr...

Страница 12: ...rong enough to register on the VU Meter Kit VU 1MK500 PCB Component Layout Guide VU 1MK500 VU Meter Bill of Materials Qty Part Desc 1 PCB Custom PCB 1 VREG1 78L18 5 D1 D2 D3 D4 D5 3mm LED 1 IC1 NTE1866 1 C1 0 1uf 100V 2 C2 C3 0 47uf 50V 1 R1 2K67 1 R2 6K34 1 R3 10K Trimmer 1 R4 8K2 ...

Страница 13: ...ent may be reproduced either mechanically or electronically posted online on the Internet in whole or in part without the expressed written permission of FiveFish Studios This document is solely provided to the kit builder of the VU 1MK500 VU Meter Kit ...

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