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.
PARTS IDENTIFICATION Resistors Diodes Capacitors LEDs Discap Yellow Integrated Circuits Electrolytic Integrated Circuit (IC) IDENTIFYING RESISTOR VALUES Use the following information as a guide in properly identifying the value of resistors. BAND 1 1st Digit Color Bands Black Multiplier Brown Tolerance Orange Yellow...
TTL or CMOS levels input signal makes up the special circuit on the base of transistors from U2 SPECIFICATIONS The LP-535 Logic Probe Kit tests different types of digital logic circuit families. Working Voltage Current Consumption Frequency Response...
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CONSTRUCTION Introduction Assembly of your LP-535 Logic Probe Kit will prove to be an exciting project and give you much satisfaction and personal achievement. If you have experience in soldering and wiring techniques, then you should have no problem with the assembly of this kit. Care must be given to identifying the proper components and in good soldering habits.
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A poorly soldered joint can greatly affect small current flow in circuits and can cause equipment failure. You can damage a PC board or a component with too much heat or cause a cold solder joint with insufficient heat. Sloppy soldering can cause bridges between two adjacent foils preventing the circuit from functioning. What Good Soldering Looks Like A good solder connection should be bright, shiny, smooth, and uniformly flowed over all surfaces.
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ASSEMBLE COMPONENTS TO THE PC BOARD * Resistors R2, R4, R6, R7 and R9 are to be installed the standard way as shown on page 4. SP1 - Speaker (see Figure A) D8 - 1N4001 Diode (epoxy) (see Figure B, vertical) C9 - 47 F 50V Electrolytic Cap.
Figure E Insert the IC socket into the PC board with the notch in the direction shown on the top legend. Solder the IC socket into place. Insert the IC into the socket with the notch in the same direction as the notch on the socket.
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Peel the backing off of the label and stick the label onto the top case as shown in Figure J. Then, slide on the red tubing onto the tip as shown. Shrink the tubing by heating it with your soldering iron. Be sure that the soldering iron does not contact the tubing or plastic case.
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. One of the most frequently occurring problems is poor solder connections. a) Tug slightly on all parts to make sure that they are indeed soldered.
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GLOSSARY Alternating Current (AC) Anode Capacitor Cathode CMOS Current Diode Direct Current (DC) Frequency Impedance Input Impedance Integrated Circuit (IC) Inverter Light Emitting Diode (LED) Logic Probe Oscillator PC Board Power Supply Pulse Resistor Speaker Troubleshoot TTL (Transistor-Transistor Logic) Voltage Zener Non-polarized power that is constantly changing back and forth between positive and negative.
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