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AUTO-SCAN FM RADIO KIT

MODEL FM-88K

Assembly and Instruction Manual

ELENCO

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

ELENCO

150 Carpenter Avenue

Wheeling, IL 60090

(847) 541-3800

Website: www.elenco.com

To see our complete line of Educational Products

go to WWW.ELENCO.COM

Содержание FM-88K

Страница 1: ...753050 No part of this book shall be reproduced by any means electronic photocopying or otherwise without written permission from the publisher ELENCO 150 Carpenter Avenue Wheeling IL 60090 847 541 38...

Страница 2: ...eceiver to pick up low amplitude signals Speaker An electronic device that turn electric impulses into sound Surface mount A method of using special Technology components that are soldered to the PC b...

Страница 3: ...ility to store a charge and block DC current Cathode The negative terminal of a diode Coil A component with inductive reactance Current Transport of electrons throughout a conductor and measured in am...

Страница 4: ...Multiply By 1 10 100 1k 10k 100k 01 0 1 12 TESTING SECTION 2 Voltage reference chart for U1 TDA 7088T turn radio on and press reset Test Verify that FM signals are present in your location by listeni...

Страница 5: ...age is produced and changes the frequency of oscillation of the local oscillator AUDIO AMPLIFIER The audio amplifier increases the audio power to a level sufficient to drive an 8 speaker To do this DC...

Страница 6: ...ransistors are working as class A amplifiers for very small levels of power to the speaker but they side toward class B operation at lager power levels Figure 1 SCHEMATIC DIAGRAM FM 88K Figure 2 CIRCU...

Страница 7: ...on diagrams To make the LM 386 a more versatile amplifier two pins 1 and 8 are provided for gain control With pins 1 and 8 open the 1 35k resistor sets the gain at 20 see Figure 4a The gain will go up...

Страница 8: ...er The conical tip is the most commonly used Turn off iron when not in use or reduce temperature setting when using a soldering station Tips should be cleaned frequently to remove oxidation before it...