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Tequipment Elenco K-14 Assembly And Instruction Manual

Christmas tree kit
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CHRISTMAS TREE KIT
MODEL K-14
Assembly and Instruction Manual
Elenco
Electronics, Inc.
TM
TM
Copyright © 2003, 1989 by Elenco
Electronics, Inc. All rights reserved.
Revised 2003
REV-G
753214
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 Tequipment Elenco K-14

  • Page 1 CHRISTMAS TREE KIT MODEL K-14 Assembly and Instruction Manual Elenco Electronics, Inc. Copyright © 2003, 1989 by Elenco Electronics, Inc. All rights reserved. Revised 2003 REV-G 753214 No part of this book shall be reproduced by any means; electronic, photocopying, or otherwise without written permission from the publisher.

  • Page 2: Parts List

    PARTS LIST If you are a student, and any parts are missing or damaged, please see instructor or bookstore. If you purchased this kit from a distributor, catalog, etc., please contact Elenco Electronics (address/phone/e- mail is at the back of this manual) for additional assistance, if needed. DO NOT contact your place of purchase as they will not be able to help you.

  • Page 3: Circuit Operation

    INTRODUCTION The Electronic Christmas Tree Kit is a fun project which also gives you the opportunity to learn about the wonderful field of electronics. The heart of the Electronic Christmas Tree is a 556 integrated circuit. This chip contains two 555 timers which are very popular in the electronic circuit blocks.
  • Page 4 CONSTRUCTION Introduction The most important factor in assembling your K-14 Electronic Christmas Tree Kit is good soldering techniques. Using the proper soldering iron is of prime importance. A small pencil type soldering iron of 25 - 40 watts is recommended. The tip of the iron must be kept clean at all times and well tinned. Safety Procedures •...
  • Page 5 ASSEMBLE COMPONENTS TO THE PC BOARD Figure A D9 - Red LED R15 - 1.2kW 5% 1/4W Resistor Mount the LED flush to (see Figure A) the PC board with the flat (brown-red-red-gold) side in the same direction as marked. R17 - 1.2kW 5% 1/4W Resistor D7 - Green LED Flat...

  • Page 6: Battery Holder Installation

    SOUND CIRCUIT INSTALLATION To +BZ 1. Thread the buzzer wires through the hole (near C7) from the component side of the PC board as shown in Figure E. Figure E To –BZ 2. Solder the wire from the outer edge of the buzzer to the point –BZ on the PC board.

  • Page 7: Troubleshooting

    OPERATING INSTRUCTIONS Turn the switch on. The LEDs will randomly blink and the three melodies will begin to play. TROUBLESHOOTING Contact Elenco Electronics if you have any problems. DO NOT contact your place of purchase as they will not be able to help you. 1.
  • Page 8 QUIZ 1. The main component of the Electronic Christmas Tree is the ___________ IC. 2. There are __________ 555 timers used in our circuit. 3. The LED lights when _______ appear across the LED and its resistor. 4. When the output of the 555 IC is high, the ___________ LEDs will light. 5.

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