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Summary of Contents for Elenco Electronics K-17
- Page 1 LED ROBOT BLINKER KIT MODEL K-17 Assembly and Instruction Manual Elenco Electronics, Inc. Copyright © 1989, 1998 Elenco Electronics, Inc. Revised 2001 REV-J 753217...
- Page 2 If any parts are missing or damaged, see instructor or bookstore. DO NOT contact your place of purchase as they will not be able to help you. 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 F (microfarads). Most capacitors will have their actual value printed on them.
- Page 4 INTRODUCTION The Robot Blinker alternately flashes a pair of LEDs (light emitting diode) on at about two blinks per second. The circuit is basically an astable multivibrator or free-running oscillator. In analyzing how it works, we will look at the start-up stage and then at the continuous cycle stage where the LEDs flash at a continuous two cycles per second.
- Page 5 CONSTRUCTION Introduction The most important factor in assembling your K-17 Robot Blinker 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 D2 - LED (see Figure A) R3 - 330 5% 1/4W Resistor (orange-orange-brown-gold) Q1 - 2N3904 Transistor (see Figure B) R1 - 10k 5% 1/4W Resistor (brown-black-orange-gold) C2 - 100 F Electrolytic Cap. (see Figure C) D3 - LED (see Figure A) B1 - Battery Snap - Install the red wire into the positive (+) hole...
- Page 7 SCHEMATIC DIAGRAM TROUBLESHOOTING Consult your instructor or contact Elenco Electronics if you have any problems. DO NOT contact your place of purchase as they will not be able to help you. One of the most frequently occurring problems is poor solder connections.
- Page 8 10. Resistors R2 and R3 are used to ________ the current in the LEDs. limit off; two; 2,4; charging; 0.7; above; collector; emitter, base, current; oscillator; Answers: 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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