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nidza napisao:Skinuću jednu, ali mislim da nema ništa sem malo keramike ili tako nečeg. Mala je to snaga.

Tapatalk

Grujic napisao:Koliko su u praksi pouzdani zglobni nosači za TV, 40", uz uslov da će se relativno često okretati...? Ne mogu da se otrgnem utisku da je to kilavije od fiksnih kada su prilepljeniji uza zid

dragvorl napisao:

nidza napisao:Skinuću jednu, ali mislim da nema ništa sem malo keramike ili tako nečeg. Mala je to snaga.

Tapatalk

Ta keramika i jeste hladnjak. Svaka ozbiljnija led sijalica ima to.

Delija napisao:

dragvorl napisao:

nidza napisao:Skinuću jednu, ali mislim da nema ništa sem malo keramike ili tako nečeg. Mala je to snaga.

Tapatalk

Ta keramika i jeste hladnjak. Svaka ozbiljnija led sijalica ima to.

Keramika jako tesko moze da bude hladnjak, posto je izolator
Keramika trpi visoke temperature, pa se zato koristi tamo gde je to potrebno.

CERAMICS: TWO JOBS IN ONE MATERIAL

It is common to optimise only the heat sink. Hundreds of designs are available, essentially of aluminium. But for further improvement it is necessary to advance or even eliminate the third group. Electrical isolation has to come from the heat sink itself by the use of other materials. Our conclusion is ceramic. Ceramics, e.g. Rubalit (Al2O3) or Alunit (AlN), combine two crucial characteristics: they are electrically isolating and thermally conductive.

Rubalit has a lower, Alunit a slightly higher conductivity than aluminium. On the other hand Rubalit is less expensive than Alunit (Fig. 3). Their thermal expansion coefficient is adapted to semiconductors, they are rigid, corrosion-resistant, and RoHS compliant. Completely inert, they are the last part of a system to die. The simplified construction (without glues, insulation layers, etc.) combined with a direct and permanent bond between the high-power LED and the ceramic heat sink create ideal operating conditions for the entire assembly. Put simply, what isn’t there won’t wear out and materials that expand in proportion to each other won’t separate. The result is excellent long-term stability, secure thermal management, and exceptional reliability. A patent has been filed and the concept has been named CeramCool.