Elenco Electronics XK-700 User Manual

DIGITAL / ANALOG TRAINER
MODEL XK-700
A COMPLETE MINI-LAB FOR BUILDING, TESTING
AND PROTOTYPING ANALOG AND DIGITAL CIRCUITS
Instruction Manual
For Trainer with Organizer Case
Tools and meter not included.
Copyright © 2007, 1996 by Elenco
®
Electronics, Inc. All rights reserved. Revised 2007 REV-L 753028
No part of this book shall be reproduced by any means; electronic, photocopying, or otherwise without written permission from the publisher.
Elenco
®
Electronics, Inc.

Elenco Electronics XK-700 Specifications

General

AC Power Supply	16V AC
Function Generator	Yes
Waveforms	Sine, Square, Triangle
Frequency Counter	Yes
Breadboard	Yes
Speaker	8 Ohm
Potentiometers	10k, 100k

Summary

Trainer Components and Sections

Power Supply Overview

Details the five built-in power supplies with variable and fixed voltage outputs.

Analog Trainer Section

Describes the function generator's sine, square, triangle waveforms and frequency controls.

Digital Trainer Section

Covers clock generator, logic switches, LEDs, and data switches for digital designs.

Front Panel Control Descriptions

Power Supply Controls

Covers fuse holder, on-off switch, power output terminals, and variable voltage controls.

Function Generator Controls

Details waveform selection, frequency, amplitude, and DC offset adjustments.

Digital Section Controls

Explains logic switches, logic indicators, and data switches for digital circuits.

Potentiometers and Breadboards

Describes undedicated potentiometers and the breadboard tie points.

General Specifications

Power Supplies Specifications

Lists detailed specifications for all power supply outputs and regulation.

Function Generator Specifications

Outlines waveform types, frequency range, amplitude, and impedance.

Digital Section Specifications

Details specifications for data switches, logic switches, LEDs, and clock.

Breadboards and Variable Resistance

Covers breadboard tie points and specifications for potentiometers.

Testing Procedures

Power Supply Testing

Instructions for verifying voltage outputs and short-circuit protection.

Function Generator Testing

Steps to test sine wave output, frequency, and CLK output.

Logic Indicator Testing

Procedure to check the functionality of the eight logic indicator LEDs.

Circuit Description

Positive Power Supply Circuit

Explains the transformer, AC to DC converter, and voltage regulator stages.

Full-Wave Rectification

Explains how a second diode and transformer winding create full-wave rectification.

Regulator Circuit

Details the LM-317 integrated circuit used for voltage regulation.

Schematic Diagram

Functional Block Details

Logic Switches Operation

Explains the no-bounce operation and output behavior of logic switches.

Data Switches Operation

Describes the simple circuit and output states of the eight data switches.

Function Generator Circuit

Details the XR-2206 IC used for generating waveforms and frequency control.

Logic Indicators Circuit

Explains the circuit for the eight logic indicator LEDs using a 74HC04 IC.

Maintenance and Support

Fuse Replacement Procedure

Step-by-step guide for safely replacing the fuse.

Parts List

Comprehensive list of components and their part numbers.

Popular Meters

Details compatible meters with features and specifications.

Warranty Policy

Information on product warranty, terms, and service procedures.