Elenco Electronics K-40 Assembly And Instruction Manual
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Elenco Electronics K-40 Assembly And Instruction Manual

Elenco Electronics K-40 Assembly And Instruction Manual

Temperature adapter kit
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TEMPERATURE ADAPTER KIT
MODEL TA-12/K-40
Assembly and Instruction Manual
Elenco
®
Electronics, Inc.
Copyright © 2005, 1994 by Elenco
®
Electronics, Inc. All rights reserved.
Revised 2005
REV-C
753125
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-40

  • Page 1 TEMPERATURE ADAPTER KIT MODEL TA-12/K-40 Assembly and Instruction Manual Elenco ® Electronics, Inc. Copyright © 2005, 1994 by Elenco ® Electronics, Inc. All rights reserved. Revised 2005 REV-C 753125 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: Temperature Sensor

    INTRODUCTION The TA-12/K-40 Temperature Adapter Kit is used in conjunction with a digital multimeter to read temperature. The Temperature Adapter consists of THEORY OF OPERATION VOLTAGE REGULATOR The MC7805 (U2) is the voltage regulator which is used to supply a constant voltage of about 5V to the circuit.
  • Page 4 CONSTRUCTION Introduction The most important factor in assembling your TA-12/K-40 Temperature Adapter 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.
  • Page 5 ASSEMBLE COMPONENTS TO THE PC BOARD R2 - 10kΩ Trim Pot (see Figure A) R5 - 1kΩ 5% 1/4W Resistor (brown-black-red-gold) R10 - 3.9kΩ 5% 1/4W Resistor (orange-white-red-gold) C1 - .01µF, 50V (103) Discap U2 - MC7805 5V Regulator (see Figure B) R4 - 10kΩ...

  • Page 6: Final Assembly

    FINAL ASSEMBLY Black J3 - Battery Snap Red Wire J4 - Battery Snap Black Wire J2 - Black Multimeter Lead (see Figure D) J1 - Black Multimeter Lead (see Figure D) Figure D Pull the boot off of the alligator clip (to remove boot, clip the alligator clip onto a pencil, then pull off boot).

  • Page 7: Component Check

    CALIBRATION 1. Connect a 9V battery to the battery snap. 2. Connect the positive probe of your digital multimeter to point J1, and the negative probe to GND. 3. Adjust R2 for a reading of about 2.5 to 3V. 4. Then, connect the positive probe of the digital multimeter to J2 and the negative probe to J1. 5.
  • Page 8 QUIZ Fill in the blanks and check your answers below. 1. The three main sections of the TA-12/K-40 are ________________, ________________, and ________________. 2. The output voltage of the LM7805 regulator is _____ volts. 3. Name the three terminals of the transistor: __________, __________, and __________.

This manual is also suitable for:

Ta-12

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