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Elenco Electronics XK-550T Manual
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Elenco Electronics XK-550T Manual

Digital / analog trainer
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DIGITAL / ANALOG TRAINER
MODEL XK-550
A COMPLETE MINI-LAB FOR BUILDING, TESTING
AND PROTOTYPING ANALOG AND DIGITAL CIRCUITS
Tools and meter not included.
Instruction Manual
For Trainer with Organizer Case
Elenco
TM
Electronics, Inc.
TM
Copyright © 2004, 1994 by Elenco
Electronics, Inc. All rights reserved.
Revised 2004
REV-G
753550
No part of this book shall be reproduced by any means; electronic, photocopying, or otherwise without written permission from the publisher.

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Summary of Contents for Elenco Electronics XK-550T

  • Page 1 DIGITAL / ANALOG TRAINER MODEL XK-550 A COMPLETE MINI-LAB FOR BUILDING, TESTING AND PROTOTYPING ANALOG AND DIGITAL CIRCUITS Tools and meter not included. Instruction Manual For Trainer with Organizer Case Elenco Electronics, Inc. Copyright © 2004, 1994 by Elenco Electronics, Inc. All rights reserved. Revised 2004 REV-G 753550...
  • Page 2 GENERAL SPECIFICATIONS FOR MODEL XK-550 Power Supplies: • 0V to 20VDC @ .5 amp (0V to 15V @ 1 amp) • 0V to –20VDC @ .5 amp (0V to –15V @ 1 amp) • +12V +5% @ 1 amp • –12V +5% @ 1 amp •...
  • Page 3 USERS DESCRIPTION OF FRONT PANEL CONTROL Fuse holder - Easy access for replacement of 11) Two logic switches - These are no bounce 1.25A 250V fuse. logic switches. Give one signal state change per movement of switch. On-Off switch - Allows power to be applied to all outputs.
  • Page 4 INTRODUCTION Congratulations on your purchase of the Elenco Your XK-550 has four basic trainers in a single Model XK-550 Digital / Analog Trainer. This trainer package. They are, 5 independent power supplies, is designed to simplify designing of digital and an analog trainer, a digital and a bredblock analog circuits.
  • Page 5 TESTING THE XK-550 DIGITAL ANALOG TRAINER The following paragraphs give detailed instructions TESTING THE FUNCTION GENERATOR on testing the digital / analog trainer. To test the function generator, you will need an oscilloscope. Connect the scope to the terminal Note that in the XK-550 trainer there are five major marked FREQ., and the ground clip to the terminal functions, (1) Power Supply (2) Logic Indicators (3) marked GND.
  • Page 6 TESTING THE LOGIC SWITCHES TESTING THE DATA SWITCHES There are two logic switches and four conditions to There are eight data switches to be checked. The be checked out. Connect a wire from the “X” test output of the switches are at 5V or ground pin to the “A”...
  • Page 7 By the addition of a second diode and transformer draw about 1mA current. Transistor Q2 sees the winding we can fill in the gap between cycles as current source as a very high resistor of about 1 shown in Figure 4. This circuit is called full-wave meg ohms.
  • Page 8 SCHEMATIC DIAGRAM...
  • Page 10 Transistor Q5 is called the pass transistor. THE LOGIC SWITCHES controls the current reaching the output. Transistor The logic switches perform the same function as the Q3 and Q4 are emitter followers. Their function is to data switch, that is, they produce high or low states. raise the impedance of the pass transistor.
  • Page 11 The XR-2206 is comprised of four functional blocks, The VCO produces a squarewave signal. This a voltage controlled oscillator (VCO), an analog squarewave is sent to a shaper and converted into multiplier & sine shaper, a unity gain buffer amplifier a sine wave.
  • Page 12 PARTS LIST Qty. Description Part# Qty. Description Part# Resistors Miscellaneous 100Ω 1/4W 5% brn-blk-brn-gold 131000 Transformer 44K500 10 120Ω 1/4W 5% brn-red-brn-gold 131200 PC Board 514550 200Ω 1/4W 5% red-blk-brn-gold 132000 Fuse 1.25A 530125 220Ω 1/4W 5% red-red-brn-gold 132200 10 Switch Slide PC Mount DPDT 541009 330Ω...
  • Page 13 ORGANIZER CARRYING CASE The carrying case for the XK-550 Digital/Analog The sloped side pocket of the case next to the Trainer has been designed to hold a meter and trainer can accommodate a wide range of different many of the most important tools. The layout below meters.
  • Page 14 POPULAR METERS THAT CAN BE USED WITH THE XK-550 TRAINER Model M-2795 Model M-1700 Features Features • 3 3/4 digit, 4,000 count display • 3 1/2 digit, 2,000 count display • Audible continuity test • Frequency to 20MHz • Data hold / rel. value •...
  • Page 15 WARRANTY POLICY Your XK-550 Digital / Analog Trainer has been tested and conforms to our rigid requirements on performance and durability. It is guaranteed to be free of defects in workmanship, materials and construction for a period of 2 years. If this product should fail during normal use within the first 3 months from the date of purchase, Elenco will repair or replace the unit at no cost.
  • Page 16 Elenco Electronics, Inc. 150 W. Carpenter Avenue Wheeling, IL 60090 (847) 541-3800 http://www.elenco.com e-mail: elenco@elenco.com...

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Xk-550