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Elenco Electronics FO-30K, Сборка и инструкция по эксплуатации

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Elenco Electronics FO-30K Скачать руководство пользователя страница 17

PARTS IDENTIFICATION

-16-

PARTS LIST

If you are a student, and any parts are missing or damaged, please see instructor or bookstore.
If you purchased this fiber optics 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.

RESISTORS

Qty.

Symbol

Value

Color Code

Part #

1

R3

10

Ω

5% 1/4W

brown-black-black-gold

121000

1

R2

2.2k

Ω

5% 1/4W

red-red-red-gold

142200

1

R1

200

Ω

Pot

191322

CAPACITORS

Qty.

Symbol

Value

Description

Part #

3

C1, C3, C5

.047

µ

F (473)

Mylar

244717

1

C6

10

µ

F

Electrolytic

271045

1

C2

47

µ

F

Electrolytic

274744

1

C4

220

µ

F

Electrolytic

282244

SEMICONDUCTORS

Qty.

Symbol

Value

Description

Part #

1

Q1

LPT80A

Phototransistor

32T80A

1

U1

LM-386

Audio Op-amp Integrated Circuit

330386

1

D1

LED Red

350002

MISCELLANEOUS

Qty.

Description

Part #

1

PC Board

519015B

1

Switch

541103

1

Battery Holder

590096

1

Speaker

590102

2

Screws 2-56 x 1/4”

641230

Qty.

Description

Part #

2

Nuts 2-56

644201

1

Lug

661106

1

IC Socket 8-pin

664008

6”

Wire 22ga. Black

814120

6”

Wire 22ga. Red

814220

RECEIVER SECTION

Resistor

Capacitors

Electrolytic

Mylar

Transistor

Red

Integrated Circuit

IC Socket

Switch

LED

Phototransistor Potentiometer

Battery

Holder

Lug

Speaker

Содержание FO-30K

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

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

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