Elenco Electronics K-43 Assembly And Instruction Manual
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Elenco Electronics K-43 Assembly And Instruction Manual

Decision maker kit
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DECISION MAKER KIT
MODEL K-43
Assembly and Instruction Manual
Elenco Electronics, Inc.
Copyright © 2002 Elenco Electronics, Inc.
753123

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Summary of Contents for Elenco Electronics K-43

  • Page 1 DECISION MAKER KIT MODEL K-43 Assembly and Instruction Manual Elenco Electronics, Inc. Copyright © 2002 Elenco Electronics, Inc. 753123...

  • 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 Decision Maker 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

    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.

  • Page 4: Theory Of Operation

    INTRODUCTION Need help in making up your mind? Just ask the K-43 Decision Maker. Press the ask button and the right answer will be given to your question. The Decision Maker has eight light emitting diodes (LEDs) that are driven ON and OFF one at a time in sequence.
  • Page 5 Oscillators The Decision Maker uses two oscillators. The first oscillator produces a frequency of about 20 hertz (cycles) and the other produces a frequency of about 2000 hertz. Figure 3 shows the basic oscillator circuit. The 4011 integrated circuit (IC) contains four two-input NAND gates.
  • Page 6 CONSTRUCTION Introduction The most important factor in assembling your K-43 Decision Maker 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 7 ASSEMBLE COMPONENTS TO THE PC BOARD J3 & J4 - Battery Snap Install the red wire into the positive (+) hole and the black wire into the negative (–) hole as shown. Bend the leads to hold the battery snap in place. Solder and cut off the excess leads.
  • Page 8 ASSEMBLE COMPONENTS TO THE PC BOARD (CONTINUED) Figure H Buzzer Mount the buzzer on the foil side of the PC board. The white center should be facing up, also note the position of the pad in the white area. Solder the buzzer to the PC board at the two points.

  • Page 9: Operating Procedure

    9 volt alkaline battery to the battery snap 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.
  • Page 10 QUIZ Fill in the blanks and check your answers below. 1. When driven by clock pulses, the outputs of the decade counter will go on and _____________ one at a time in sequence. 2. LEDs driven _____________. 3. The 4017 IC contains a _________ stage divide by _____________ counter.

  • 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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