Elenco FM Wireless Microphone Kit Manuel d'utilisateur

FM WIRELESS MICROPHONE KITMODEL K-30/AK-710Assembly and Instruction ManualElenco®Electronics, Inc.Copyright © 2006, 1994 by Elenco®Electronics, Inc.Al

-9-Tug slightly on all parts to make sure that they areindeed soldered.A solder bridge may occur if you accidently touchan adjacent foil by using too

SCHEMATIC DIAGRAM-10-GLOSSARYAmplitude ModulationTo modify the amplitude of the carrierwave in accordance with the desiredsignal, often abbreviated as

QUIZ1. The letters FM stand for ___________ ___________.2. In AM transmissions, the audio information varies the _____________ of the radio frequency

-1-PARTS LISTIf you are a student, and any parts are missing or damaged, please see instructor or bookstore.If you purchased this kit from a distribut

-2-FM MICROPHONE KITYour FM Microphone is really a miniature frequencymodulated transmitter operating in the standard FMbroadcast band.The range of fr

-3-BASIC MODULATION THEORYThere are many different methods for modulatinginformation onto a radio wave. The two mostpopular methods are Amplitude Modu

-4-CIRCUIT OPERATIONFigure 5 shows a block diagram of the FM wirelessmicrophone circuit. The microphone element inBlock 1 acts like a resistor that ch

IntroductionThe most important factor in assembling your FM Wireless Microphone is good soldering techniques. Using theproper soldering iron is of pri

ASSEMBLE COMPONENTS TO THE PC BOARD-6-C4 - 10pF Discap (10)Q2 - 2N3904 Transistor(see Figure A)L1 - CoilC5 - 12pF Discap (12)C6 - 33pF Discap (33)R8 -

-7-Mount the slide switch onto the foil sideof the PC board. The tabs on the switchmust go through the slots of the PCboard. Solder the switch to the

-8-Insert the mic into the slot as shown in Figure F.Insert the LED into the hole as shown in Figure F.Place a piece of tape over the LED to hold it i