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™ Electronics, Inc. Copyright © 1992 Elenco™ Electronics, Inc. REV-F Revised 2003 753241...
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Page 2: 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™ Electronics (address/phone/e-mail is at the back of this manual) for additional assistance, if needed. - Page 3 IDENTIFYING RESISTOR VALUES Use the following information as a guide in properly identifying the value of resistors. BAND 1 1st Digit Color Digit Black Brown Orange Yellow Green Blue Violet Gray White IDENTIFYING CAPACITOR VALUES Capacitors will be identified by their capacitance value in pF (picofarads), nF (nanofarads), or mF (microfarads). Most capacitors will have their actual value printed on them.
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Page 4: Circuit Description
CIRCUIT DESCRIPTION The Elenco™ Model LP-525K Logic Probe kit is a convenient and precise instrument for use in the measurement of logic circuits. levels (high or low), and voltage transients down to 25 nanoseconds. The LED readouts provide instant response to the logic state. - Page 5 CONSTRUCTION Introduction The most important factor in assembling your LP-525K Logic Probe Kit 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.
- 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 R13 - 18kW Resistor (brown-gray-orange-gold) R9 - 4.7MW Resistor (yellow-violet-green-gold) R10 - 20kW Resistor (red-black-orange-gold) R12 - 30kW Resistor...
- 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 vertically, mount as indicated by band. (Diodes have polarity). Figure 2 D1 - 1N4148 Diode (see Figure 2) D2 - 1N4148 Diode (see Figure 2)
- 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 into the PC board with the notch in the direction shown on legend. Solder the IC socket into place.
- Page 9 Install the power cord as shown in Figure 9. Pull the power cord wires apart about 2 inches on one end. Strip the insulation off of both wires to expose 1/4” of bare wire. Note that one wire is ribbed on the edge.
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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 fairly easy. -
Page 11: Schematic Diagram
SCHEMATIC DIAGRAM -10-... - Page 12 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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