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    3 Watt FM transmitter

     

    Hii ni kwa schematic transmitter FM na 3 kwa 3.5 nguvu W pato ambayo inaweza kutumika kati ya 90 na 110 MHz. Ingawa utulivu si mbaya, PLL zinaweza kutumika kwenye mzunguko huu.

    Hii ni mzunguko kwamba nimepata kujenga miaka michache iliyopita kwa ajili ya rafiki, ambao walikuwa ni pamoja na amplifier BLY88 kupata 20 W pato nguvu. Kutoka maelezo kwamba mimi alifanya saa schematic awali, ni kazi nzuri na SWR ya 1: 1.05 (kawaida kabisa katika nafasi yangu na antenna yangu).

    Kimpango


     

    Hii ni schematic ya 3W FM Transmitter

    Sehemu

    Sehemu ya
    Jumla ya Uchina.
    Maelezo
    Mabadilisho
    R1, R4, R14, R15 4 10K 1 / 4W resistor  
    R2, R3 2 22K 1 / 4W resistor  
    R5, R13 2 3.9K 1 / 4W resistor  
    R6, R11 2 680 ohm 1 / 4W resistor  
    R7 1 150 ohm 1 / 4W resistor  
    R8, R12 2 100 ohm 1 / 4W resistor  
    R9 1 68 ohm 1 / 4W resistor  
    R10 1 6.8K 1 / 4W resistor  
    C1 1 4.7pF Kauri Disc Capacitor  
    C2,C3,C4,C5,C7,C11,C12 7 100nF Kauri Disc Capacitor  
    C6, C9, C10 3 10nF Kauri Disc Capacitor  
    C8, C14 2 60pF Trimmer capacitor  
    C13 1 82pF Kauri Disc Capacitor  
    C15 1 27pF Kauri Disc Capacitor  
    C16 1 22pF Kauri Disc Capacitor  
    C17 1 10uF 25V Electrolytic capacitor  
    C18 1 33pF Kauri Disc Capacitor  
    C19 1 18pF Kauri Disc Capacitor  
    C20 1 12pF Kauri Disc Capacitor  
    C21, C22, C23, C24 4 40pF Trimmer capacitor  
    C25 1 5pF Kauri Disc Capacitor  
    L1 1 5 WDG, Dia 6 mm, mm 1 CuAg, Space 1 mm  
    L2,L3,L5,L7,L9 5 6-shimo Ferroxcube Wide bendi HF Itanyonga (5 WDG)  
    L4, L6, L8 3 1.5 WDG, Dia 6 mm, mm 1 CuAg, Space 1 mm  
    L10 1 8 WDG, Dia 5 mm, mm 1 CuAg, Space 1 mm  
    D1 1 BB405 BB102 au sawa (wengi varicaps na C = 2-PF 20 [ca.] Kufanya)
    Q1 1 2N3866  
    Q2, Q4 2 2N2219A  
    Q3 1 BF115  
    Q5 1 2N3553  
    U1 1 7810 Regulator  
    MIC 1 Electret Microphone  
    Ziada 1 PC Bodi, Wire Kwa Antenna, heatsinks  

    Vidokezo

       

    1. Barua pepe Rae XL Tkacik na maswali, maoni, nk
    2.  

    3. mzunguko imekuwa kipimo kwenye breadboard kawaida RF-upimaji (na moja ya shaba upande). Kufanya uhusiano kati ya baadhi ya pande mbili. Kujenga transmitter katika casing RF-ushahidi, kutumia viungio nzuri na cable, kufanya shielding kati ya hatua tofauti, na kuwa na ufahamu wa sheria nyingine zote RF ya jengo.
    4.  

    5. Q1 na Q5 lazima kilichopozwa na kuzama joto. kesi ya siri-Q4 lazima msingi.
    6.  

    7. C24 ni kwa ajili ya kurekebisha mzunguko. trimmers nyingine ni lazima kurekebishwa kwa nguvu upeo pato na SWR kiwango cha chini na pembejeo sasa.
    8.  

    9. Mitaa sheria katika baadhi ya majimbo mikoa, au nchi inaweza kuzuia operesheni ya transmitter hii. Angalia na serikali za mitaa.

     

     

     

     

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