Elenco Electronics FO-30K Assembly And Instruction Manual Download Page 1

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FIBER OPTICS KIT

MODEL FO-30K

Assembly and Instruction Manual

Revised 2005 REV-P

753259

No part of this book shall be reproduced by any means; electronic, photocopying, or otherwise without written permission from the publisher.

Elenco

Electronics, Inc.

Summary of Contents for FO-30K

Page 1: ...nual Copyright 2005 1994 by Elenco Electronics Inc All rights reserved Revised 2005 REV P 753259 No part of this book shall be reproduced by any means electronic photocopying or otherwise without writ...

Page 2: ...reshapes the electrical signal 3 The other parts which are not included in the diagram consists of connectors which are used to connect the fibers to the source and detector TRANSMITTER RECEIVER FIBE...

Page 3: ...of purchase as they will not be able to help you RESISTORS Qty Symbol Value Color Code Part 1 R8 220 5 1 4W red red brown gold 132200 1 R7 1k 5 1 4W brown black red gold 141000 2 R1 R3 2 2k 5 1 4W red...

Page 4: ...at pin 3 and pin 2 which is about 4 5V This 4 5V at the input pins is due to the effect of resistors R4 and R5 which act as a voltage divider This constant DC voltage helps keep the NPN transistor 2N...

Page 5: ...mponent Lead Solder Soldering Iron Drag Foil 1 Solder all components from the copper foil side only Push the soldering iron tip against both the lead and the circuit board foil 2 Apply a small amount...

Page 6: ...h 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 A B C D Mount flush with PC boa...

Page 7: ...r optic link They are _____________ _____________ and _____________ 2 The function of the transmitter is to convert an _____________ signal into a _____________ signal 3 The function of the fiber opti...

Page 8: ...th be it copper or fiber the signal loses strength The loss of strength is called attenuation In a copper cable attenuation increases with frequency The higher the frequency of the information signal...

Page 9: ...ange red Light also can be thought of as little bundles of energy being rapidly transmitted These discrete groups of energy are called photons and the amount of energy present in each photon is depend...

Page 10: ...ted differently Red light deviates the least and travels the fastest while violet light deviates the most and travels the slowest The white light then emerges from the prism divided into the colors of...

Page 11: ...the normal as shown in Figure 2C Light going from a higher index to a lower will refract away from the normal as shown in Figure 2D 1 As the angle of incidence increases the angle of refraction appro...

Page 12: ...tween the incident and refracted rays n1 sin 1 n2 sin 2 where n1 and n2 are refractive indexes 1 and 2 are angle of incidence and angle of refraction respectively The law shows that the angles depend...

Page 13: ...The inner core is the light carrying part The surrounding cladding provides the difference in the refractive index that allows total internal reflection of light through the core The fiber usually has...

Page 14: ...of 1 46 these values are typical for optical fibers By applying Snell s Law we can calculate the critical angle c arcsin n2 n1 c arcsin 1 46 1 48 80 6O or approximately 81O Figure 2F shows that as li...

Page 15: ...tio and power is 10 times the ratio The basic use of the decibel is to compare the power entering the system circuit or component to the power leaving it In fiber optics we deal mostly with loss and o...

Page 16: ...ICAL FIBER 15 Answers 1 wide bandwidth low loss electromagnetic immunity 2 rate 3 attenuation 4 glass plastic 5 radiation 6 loss gain 7 light light 8 reflect 9 cladding core 10 reflection QUIZ 2 1 The...

Page 17: ...ORS Qty Symbol Value Description Part 3 C1 C3 C5 047 F 473 Mylar 244717 1 C6 10 F Electrolytic 271045 1 C2 47 F Electrolytic 274744 1 C4 220 F Electrolytic 282244 SEMICONDUCTORS Qty Symbol Value Descr...

Page 18: ...the more current will flow through transistor Q1 The current will then be coupled to the audio amplifier LM386 through capacitor C1 for amplification The gain of the audio amplifier LM386 is internall...

Page 19: ...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 Figure A Mount the LED with the f...

Page 20: ...into the microphone You should hear your voice from the speaker of the receiver Now place C4 into the circuit by sliding switch S2 toward the infrared LED You should hear a shrill noise from the spea...

Page 21: ...g around U1 THERE IS NO VOICE SIGNAL ON TEST Check resistors R2 R4 R5 and R6 POINT TP Check microphone orientation Check capacitors C1 and C3 Check U1 TRANSMITTER PROBLEM POSSIBLE CAUSE IF LED D1 DOES...

Page 22: ...er that surrounds the core and has a lower index of refraction CONNECTOR A connector is a device which is used to connect both ends of the fiber to the source and detector CORE The central light carry...

Page 23: ...tronic parts PRISM A device which splits white light into a rainbow of colors SOURCE The light emitter either an LED or a laser diode in a fiber optic link WAVELENGTH The distance between the same two...

Page 24: ...Elenco Electronics Inc 150 Carpenter Avenue Wheeling IL 60090 847 541 3800 Website www elenco com e mail elenco elenco com...