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Beginner's Guide to Building an Expandable FM Radio: Components, Diagrams & 25W Amplifier

KamazWSA 8433 18
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Treść została przetłumaczona polish » english Zobacz oryginalną wersję tematu
  • #1 17196823
    KamazWSA
    Level 10  
    Hello.
    I want to build an expandable fm radio.
    I am a beginner.
    I have the equipment.
    I remember something from school.
    I will do the housing myself
    I mean a radio, which may consist of several components, has a clear timbre and has a good reception of the wave.
    It can additionally have an equalizer, speaker power amplifier up to 25W.
    And not too expensive components.
    As if someone showed me what you need and diagrams to connect.
    I want to combine everything on universal plates before I learn to etch.
    Regards and thank you for your help.

    The title was corrected / trim01.
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  • Helpful post
    #5 17197151
    aksakal
    Tube devices specialist
    Beginner's Guide to Building an Expandable FM Radio: Components, Diagrams & 25W Amplifier Beginner's Guide to Building an Expandable FM Radio: Components, Diagrams & 25W Amplifier Beginner's Guide to Building an Expandable FM Radio: Components, Diagrams & 25W Amplifier Beginner's Guide to Building an Expandable FM Radio: Components, Diagrams & 25W Amplifier
  • #6 17197209
    KamazWSA
    Level 10  
    aksakal wrote:

    You have a description of the radio
  • Helpful post
    #7 17197242
    aksakal
    Tube devices specialist
    And which description are you asking? Everything you need, even for a beginner, is in the diagram and photos! The only element for a self-made product - L1 coil - the parameters of which are indicated in the diagram.
  • #8 17197255
    KamazWSA
    Level 10  
    Speaker output power and speaker resistance.
    I'm learning practice.
  • Helpful post
    #9 17197294
    aksakal
    Tube devices specialist
    The amplifier outputs power and the loudspeaker consumes power. The power of the loudspeaker - this is the power that it can last for a long time without damaging it. In the indicated diagram, the resistance is not less than 4 Ohm. As the loudspeaker resistance increases, the output power of the amplifier decreases.
  • Helpful post
    #10 17197351
    Slawek K.
    Level 35  
    The LM386 output power is 385 mW.

    pozdr
    Slawek
  • #11 17197354
    KamazWSA
    Level 10  
    So a 4 Ohm 0.5W speaker without an additional amplifier
  • Helpful post
    #12 17197381
    gumisie
    Level 43  
    Hello.
    What do you mean by:
    KamazWSA wrote:
    without an additional amplifier
    The LM386 is an integrated audio amplifier. It is important that the resistance of the loudspeaker connected to it is not lower than 4? and that the loudspeaker power should be higher than 385 mW.
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  • #13 17197559
    aksakal
    Tube devices specialist
    If you want to increase the output power to 4W - 4Om (8W-2Om) then use the US TDA2003 amplifier. The diagram of the radio is little different from the previous one. Beginner's Guide to Building an Expandable FM Radio: Components, Diagrams & 25W Amplifier Beginner's Guide to Building an Expandable FM Radio: Components, Diagrams & 25W Amplifier
  • Helpful post
    #16 17197674
    zster

    Level 28  
    KamazWSA wrote:
    Where can you find it


    But what to find? The description contains everything - the necessary components and program listings for Arduino, necessary for the operation of the whole. If you do not want to build the board for the LCD and buttons yourself, you can buy the AVT1615 kit .. in the AVT store ;)
  • #17 17198538
    bastek777
    Level 9  
    Maybe even easier
    AVT5540.pdf

Topic summary

A beginner seeks guidance on building an expandable FM radio with good reception and clear timbre, including a 25W power amplifier and an equalizer. The discussion provides various resources, diagrams, and component recommendations, emphasizing the importance of speaker resistance and power ratings. Suggested components include the LM386 and TDA2003 amplifiers, with links to relevant diagrams and kits for assembly. Users discuss the specifications for speakers and amplifiers, and the possibility of using Arduino for additional functionality.
Summary generated by the language model.
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