Velleman K1803 User Manual

K1803
ILLUSTRATED ASSEMBLY MANUAL H1803IP'2
T otal sold er poi nts: 29
Difficulty level: beginner 1  2  3  4  5  advanced
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UNIVERSAL MONO PREAMPLIFIER
Specifications
 Power supply: 10-30VDC / 10mA.
 Output impedance: 1Kohm.
 Adjustable output level: max. 40dB.
 Frequency range: 20Hz to 20kHz ± 3dB.
 Max. input signal: 40mV.
 PCB dimensions: 30 x 40mm (1.2" x 1.57").

Velleman K1803 Specifications

General

Impedance	1000 Ω
Sensitivity	40 dB
Frequency range	20 - 20000 Hz
Connectivity technology	Wired
Product color	Green
Power requirements	10-30VDC, 10mA
Manual	Yes

Weight and Dimensions

Depth	44 mm
Width	30 mm

Summary

Universal Mono Preamplifier K1803

Product Specifications

Technical details including power supply, output impedance, frequency range, and input signal limits.

Assembly Hints and Guidelines

Essential Tools for Assembly

Lists necessary tools like soldering iron, pliers, and cutters for kit assembly.

General Assembly Best Practices

Guidelines for careful construction, including reading instructions and verifying component values.

Soldering Techniques and Component Handling

Instructions on proper soldering, lead trimming, component handling, and tape usage.

Component Construction Steps

Resistor Installation

Guidance for installing resistors (R1-R7) according to their values and PCB placement.

IC Socket Installation

Instructions for correctly positioning and installing the 8-pin IC socket (IC1).

Vertical Resistor Installation

Specific advice for mounting vertical resistors on the printed circuit board.

PCB Pin Installation

Details on how to install the various PCB pins for input, output, and power connections.

Electrolytic Capacitor Installation

Important notes on the polarity and correct placement of electrolytic capacitors (C1-C5).

Trim Potentiometer Installation

Guidance for mounting the trim potentiometer (RV1) with its specified resistance value.

IC Mounting Instructions

Precise steps for mounting the LM358 IC (IC1), emphasizing correct orientation.

Module Connection Guide

Power and Signal Connections

Instructions for connecting power supply and audio signals to the preamplifier module.

Screened Wire Recommendation

Advice on using screened wire for input and output to prevent interference.

Trimmer RV1 Functionality

Explanation of how the trimmer RV1 controls the output signal level.

Schematic and PCB Layout

Schematic Diagram

Detailed circuit diagram showing all components and their interconnections.

PCB Layout Diagram

Visual guide to the printed circuit board layout, showing component placement.