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Thread: intrebare

  1. #1
    Keep believin` Expert
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    cu convertor 12-220
    1.6 Offset Al, Invacom 0.3dB, VBOX 2 Moteck, DVB: Pinnacle PCTV-Sat, act. 18'' , 75°E <> 30°W , DM500s / Focus KSF100 / 2x DigiTV 1160NA / 1x Humax Digi-plus / 0.3dB Gold+0.8m Offset / BOOM TV

  2. #2
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    Daca convertorul e rezonabil realizat trebuie sa aiba un randament de 70-80% . Nici o alta solutie nu-ti da un randament exceptional.

  3. #3
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    Iei un UPS de 500W de calculator,desfaci capacul,arunci acumulatorul afara,legi in locul lui un acumulator de masina (de ex.35- 45Ah).Conexiunea poti s-o faci la una din mufele din spatele ups-ului de pilda cea de imprimanta(cea colorata in alb).practic o desfiintezi si o vei folosi ca si racord al acumulatorului extern.
    Testat de mine si functioneaza,ce-i drept nu pt. receptoare de satelit dar pt. alte aplicatii de teren.
    Ideile exprimate de userul acestui cont reflecta opinia personala si trebuie tratata ca atare.

  4. #4
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    Atentie, tensiunea scoasa de UPS-uri nu este sinusoidala ci dreptunghiulara. Ai toate sansele sa busesti sursa receiverului, banuiesc ca e in comutatie. Daca are cineva o schema a sursei, va pot da mai multe detalii, nu pot sa-mi desfac KAON-ul meu, e in garantie.

    SatWien.

  5. #5
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    Quote Originally Posted by SatWien
    Atentie, tensiunea scoasa de UPS-uri nu este sinusoidala ci dreptunghiulara. Ai toate sansele sa busesti sursa receiverului, banuiesc ca e in comutatie. Daca are cineva o schema a sursei, va pot da mai multe detalii, nu pot sa-mi desfac KAON-ul meu, e in garantie.

    SatWien.
    Toate sursele de calculator sunt in comutatie si UPS-urile sunt facute pentru ele. Avind in vedere redresorul care se afla dupa posibilul filtru de intrare in sursa nu mai intereseaza forma de unda care oricum nu e dreptunghiulara. Forma de unda aplicata pe transformatorul de iesire A UPS e in trepte simuland mai mult sau mai putin o sinusoida. Dupa iesirea din trensformator e chiar mai curata .

  6. #6
    Remember Digitalus!! Expert
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    Quote Originally Posted by Paul_L
    Dupa iesirea din trensformator e chiar mai curata .
    Depinde de UPS!

 

 

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