Elenco Electronics K-36 Assembly And Instruction Manual
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Elenco Electronics K-36 Assembly And Instruction Manual

Elenco Electronics K-36 Assembly And Instruction Manual

Sound activated switch kit
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SOUND ACTIVATED SWITCH KIT
MODEL K-36
Assembly and Instruction Manual
Elenco
®
Electronics, Inc.
Copyright © 2004, 1989 by Elenco
®
Electronics, Inc. All rights reserved.
Revised 2004
REV-I
753236
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 K-36

  • Page 1 SOUND ACTIVATED SWITCH KIT MODEL K-36 Assembly and Instruction Manual Elenco ® Electronics, Inc. Copyright © 2004, 1989 by Elenco ® Electronics, Inc. All rights reserved. Revised 2004 REV-I 753236 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 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: Theory Of Operation

    IDENTIFYING RESISTOR VALUES Use the following information as a guide in properly identifying the value of resistors. IDENTIFYING CAPACITOR VALUES Capacitors will be identified by their capacitance value in pF (picofarads), nF (nanofarads), or µF (microfarads). Most capacitors will have their actual value printed on them. Some capacitors may have their value printed in the following manner.
  • Page 4 THE ONE-SHOT A one-shot, or monostable multivibrator, is a circuit that, once triggered, will switch its output logic level. The output will remain at this new logic level for a predetermined period of time, after which the output will switch back to its previous logic state. The 4011 IC is a quad 2 input CMOS NAND gate.
  • Page 5 CONSTRUCTION Introduction The most important factor in assembling your Sound Activated Switch is good soldering techniques. Using the proper soldering iron is of prime importance. recommended. The tip of the iron must be kept clean at all times and well tinned. Safety Procedures •...
  • Page 6 ASSEMBLE COMPONENTS TO THE PC BOARD C10 - 100µF Electrolytic Cap. (see Figure F) C1 - .01µF Discap (103) MIC - Microphone (Figure D) R3 - 22kΩ 5% 1/4W Resistor (red-red-orange-gold) R5 - 10kΩ 5% 1/4W Resistor (brown-black-orange-gold) C2 - .1µF Discap (104) C5 - .001µF Discap (102) C7 - 1µF Electrolytic Capacitor (see Figure F)

  • Page 7: Operating Procedure

    OPERATING PROCEDURE Figure D shows the output waveforms most important to the operation of the Sound Activated Switch. When a waveform is created by a clap, it causes the first one-shot to trigger, causing its output to switch to a logic 0. When the first one- shot’s output switches back to a logic 1, the second one-shot triggers, causing its output to change to a logic 0.
  • Page 8 SCHEMATIC DIAGRAM FOIL SIDE OF PC BOARD QUIZ 1. The Sound Activated Switch consists of a transistor amplifier, a transistor switch and _______ types of digital circuits. 2. A ____________ is created when hands are clapped together. 3. A one-shot is also called a _____________ multivibrator. 4.

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