Bepone napisao:grunf napisao:meni ne triba puno ko ni tebi

co jeno pitanje, vec san dva projekta napred

u progresu neki MM/ MC phono sa LT1115 ultraniskosumni + LT1010 da zaokruzin godinu sa 15jstak rija napravljenih,

i govori datasit da moran neki niski ESR za bajpas pinova napajanja cipa.. ti si nesto eksperimentira tu sa polimeron ili? ca bis preporuci , nesto bin , neki finjak za razbit dosadu, do sada son keramicki stavlja tu- 5mm mi je raster, iman iskre 1uF ali bin nesto skuplje (iskra mi je za nic

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LTrija.png
ja bi tvom mistu gurnija te kondezatore (ostavi i ta dva na stezaljkama)do samih pinova op.ampa , a kermaiku staviš 1206 ili manji na sami pin op.amp., ubiti di ti je sad keramika stavi elektrolit ,a smd odma ispod ,ja sad tako radim , imaš dosta oko tog u pdf-ovima od AD ,posebno nova serija niskošumnih op.ampova, oni su tu uzimali u obzir i šum otpornika oko op.ampa.
polimere bi prepručia samo za digitaliju ili kao decoupling nekoj refernci , u analogiji nemaju šta tražiti, zvuče suho,krištavo
ako ćeš ultimu od kondezatora onda elna SILMIC II,imaš u mousera , kažu da je nichicon UKA serija isto dobra ali nisam proba(ali oću uskoro) ili izvuci iz škafeta koji BG, ja sam nažalost osta na još par komada, možeš staviti i neki drugi kond. ja obično stavljam panasonic FC ili rubycon ZL. serije, a triba probati i viditi šta najviše paše
evo šta kažu iz AD -a
A parallel connec-tion of capacitors from each power supply pin to ground works best. Smaller value capacitor electrolytics offer better high frequency response, whereas larger value capacitor electrolytics offer better low frequency performance. Paralleling different values and sizes of capacitors helps to ensure that the power supply pins are provided with a low ac impedance across a wide band of frequencies. This is important for minimiz-ing the coupling of noise into the amplifier—especially when the amplifier PSRR begins to roll off—because the bypass capacitors can help lessen the degradation in PSRR performance. The smallest value capacitor should be placed on the same side of the board as the amplifier and as close as possible to the amp-lifier power supply pins. The ground end of the capacitor should be connected directly to the ground plane. It is recommended that a 0.1 μF ceramic capacitor with a 0508 case size be used. The 0508 case size offers low series inductance and excellent high frequency performance. A 10 μF electrolytic capacitor should be placed in parallel with the 0.1 μF capacitor. Depending on the circuit parameters, some enhancement to performance can be realized by adding additional capacitors. Each circuit is different and should be analyzed individually for optimal performance.