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LOGIC PROBE KIT
MODEL LP-525K
Assembly and Instruction Manual
ELENCO
®
Copyright © 2013, 1994 by Elenco
Electronics, Inc. All rights reserved.
Revised 2013
REV-J
753241
®
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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Table of Contents
Related Manuals for Elenco Electronics LP-525K
Summary of Contents for Elenco Electronics LP-525K
- Page 1 LOGIC PROBE KIT MODEL LP-525K Assembly and Instruction Manual ELENCO ® Copyright © 2013, 1994 by Elenco Electronics, Inc. All rights reserved. Revised 2013 REV-J 753241 ® 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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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 LP-525K Logic Probe Kit from a distributor, catalog, etc., please contact ELENCO ® (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 IDENTIFYING RESISTOR VALUES Use the following information as a guide in properly identifying the value of resistors. BAND 1 BAND 2 Multiplier Resistance 1st Digit 2nd Digit Tolerance Color Digit Color Digit Color Multiplier Color Tolerance BANDS Black Black Black Silver ±10% Multiplier...
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Page 4: Circuit Description
CIRCUIT DESCRIPTION The Elenco ® Model LP-525K Logic Probe kit is a becomes more negative than the (+) input and the convenient and precise instrument for use in the comparator turns off. The short pulse on the input is measurement of logic circuits. It displays logic thus stretched to 1.5 milliseconds. - Page 5 • Turn off iron when not in use or reduce temperature setting when using a soldering station. The most important factor in assembling your LP-525K Logic Probe Kit is good soldering techniques. Using the proper soldering iron is of prime •...
- Page 6 ASSEMBLE COMPONENTS TO THE PC BOARD Refer to the top legend on the PC board, install and solder the following resistors. Stand resistor on end when called for. Figure 1 R23 - 200Ω Resistor (red-black-brown-gold) (see Figure 1) R13 - 18kΩ Resistor R1 - 100kΩ...
- Page 7 ASSEMBLE COMPONENTS TO THE PC BOARD Refer to the top legend on the PC board, install and solder the following diodes, capacitors and jumper wires. When mounting diodes Form jumper wire from discarded When mounting diodes horizontally, vertically, mount as resistor lead.
- Page 8 ASSEMBLE COMPONENTS TO THE PC BOARD Refer to the top legend on the PC board, install and solder the following components. Insert the IC socket Mount the transistor with the flat side in the into the PC board direction shown on the top legend. Leave with the notch in the 1/4”...
- Page 9 r Install the power cord as shown in Figure 9. Solder the red wire to hole marked “+” and the green wire to the hole marked “–” (see Figure 9). r Install the probe tip as shown in Figure 10. Using the 1 1/2” wire, strip 1/4” of insulation off of both ends.
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Page 10: Troubleshooting Chart
CAUTION: Do not connect the alligator clips to any AC power source or to DC power source greater than 35VDC. Failure to comply to this warning may result in damage to this instrument. TESTING YOUR DIGITAL PROBE Checking out your Logic Probe for proper operation is come on and stay on until the switch is flipped back to the fairly easy. - Page 11 OPERATING INSTRUCTIONS To operate the logic probe, connect the two alligator clips to the circuit DC probe tip to the circuit node to be analyzed. The LED display on the probe power supply, red clip to the positive voltage, black to ground. BE SURE body will light to indicate the condition of the node.
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Page 12: Schematic Diagram
SCHEMATIC DIAGRAM ELENCO ® 150 Carpenter Avenue • Wheeling, IL 60090 (847) 541-3800 • www.elenco.com • e-mail: elenco@elenco.com...