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    3 Watt FM emetris

    Sa a se schematic a pou yon transmetè FM ak 3 3.5 W pouvwa pwodiksyon ki kapab itilize ant 90 ak 110 megaèrts. Malgre ke estabilite a se pa te tèlman mal, yo ka yon PLL pou itilize sou sikwi sa a.

    Sa a se yon sikwi ke mwen te bati yon kèk ane de sa pou yon zanmi, ki moun ki te itilize li nan konbinezon ak anplifikatè a BLY88 yo jwenn 20 W pwodiksyon pouvwa. Soti nan nòt yo ke mwen te fè nan schematic orijinal la, li te travay amann ak yon SWR nan 1: 1.05 (byen nòmal nan plas mwen ak antèn mwen).

    schematic


     

    Sa a se schematic a 3W FM emetris a

    Pati

    Pati
    Total kte.
    Deskripsyon
    Sibstitisyon
    R1, R4, R14, R15 4 10K 1 / 4W rezistans  
    R2, R3 2 22K 1 / 4W rezistans  
    R5, R13 2 3.9K 1 / 4W rezistans  
    R6, R11 2 680 om 1 / 4W rezistans  
    R7 1 150 om 1 / 4W rezistans  
    R8, R12 2 100 om 1 / 4W rezistans  
    R9 1 68 om 1 / 4W rezistans  
    R10 1 6.8K 1 / 4W rezistans  
    C1 1 4.7pF kondansateur Disc Ceramic  
    C2,C3,C4,C5,C7,C11,C12 7 100nF kondansateur Disc Ceramic  
    C6, C9, C10 3 10nF kondansateur Disc Ceramic  
    C8, C14 2 60pF tondeuz kondansateur  
    C13 1 82pF kondansateur Disc Ceramic  
    C15 1 27pF kondansateur Disc Ceramic  
    C16 1 22pF kondansateur Disc Ceramic  
    C17 1 10uF 25V elèktrolitik kondansateur  
    C18 1 33pF kondansateur Disc Ceramic  
    C19 1 18pF kondansateur Disc Ceramic  
    C20 1 12pF kondansateur Disc Ceramic  
    C21, C22, C23, C24 4 40pF tondeuz kondansateur  
    C25 1 5pF kondansateur Disc Ceramic  
    L1 1 5 WDG, Dia 6 mm, 1 mm CuAg, espas 1 mm  
    L2,L3,L5,L7,L9 5 6-twou Ferroxcube Wide bann f toufe (5 WDG)  
    L4, L6, L8 3 1.5 WDG, Dia 6 mm, 1 mm CuAg, espas 1 mm  
    L10 1 8 WDG, Dia 5 mm, 1 mm CuAg, espas 1 mm  
    D1 1 BB405 BB102 oswa egal (ki pi varicaps ak C = 2-20 PF [approx.] Pral fè)
    Q1 1 2N3866  
    Q2, Q4 2 2N2219A  
    Q3 1 BF115  
    Q5 1 2N3553  
    U1 1 7810 Regulator  
    MIC 1 elèktre mikwofòn  
    Misc 1 Komisyon Konsèy PC, Fil Pou Antèn, Heatsinks  

    nòt

       

    1. Imèl Rae XL Tkacik ki gen kesyon, kòmantè, elatriye
    2.  

    3. Te sikwi a te teste sou yon RF-tès breadboard nòmal (ak yon sèl kòb kwiv mete bò). Fè kèk koneksyon ki genyen ant de pati yo. Bati transmetè a nan yon RF-prèv aman, sèvi ak bon konektè ak kab, fè yon pwoteksyon ant premye etap yo diferan, yo epi yo dwe okouran de tout règ yo RF lòt kote nan bilding nan.
    4.  

    5. Q1 ak Q5 yo ta dwe refwadi ak yon koule chalè. Ka-PIN la nan Q4 yo ta dwe chita.
    6.  

    7. C24 se pou ajisteman nan frekans. Lòt gazon yo dwe ajiste a maksimòm pouvwa pwodiksyon ak SWR minimòm ak aktyèl opinyon.
    8.  

    9. Lwa lokal nan kèk eta, pwovens oswa peyi kapab entèdi operasyon an nan transmetè sa a. Tcheke avèk otorite lokal yo.
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