beje, kaip čia jau kažkas rašė - su LED, kaip ir taupiosomis, diminant tik prisimažins šviesa, intymios aplinkos kaip su kaitrinėmis nesigaus. "knx" <varzug@gmail.com> wrote in message news:hsdtrg$t8d$1@trimpas.omnitel.net... > Tai gaunasi, jei paimti LED lempute be driverio, tai ji galima valdyti su > PWMu? Nes shitas dimeris butent PWM'u ir valdo. > > O kaip veikia tokie dimeriai? > http://www.luchrom.com/product/cate_8626_1.html > Nu pvz: http://www.luchrom.com/product/69087_pic.html > Ji reikia diminti su AC dimeriu? Tai paimu kaitinimo lempai skirta dimeri > > sita led dimmeri > led lempute is to pacio luchrom > ar kaip? > > > "Bilibobas" <kakbubu@tralia.lt> wrote in message > news:hsdnt3$jqe$1@trimpas.omnitel.net... >> gamintojo paaiskininimas visiskas Bull-Shit. >> >> Paprasciausiai 12V LEDas turi savyje stabilizatoriu ir jo darbo itampa >> tikriausiai nuo kokiu 5V iki 24V. Jis jis siame diapazone svies >> _vienodai_. Todel itampos keitinimo diminimas netinka. PWM diminimas >> tikriausiai irgi netinka, nes LEDo stabilizatorius tikriausiai a) turi >> iejime dideli kondika, b) LEDo stabilizatorius dirba didesniu dazniu nei >> diminimo ir pilnai speja pasiimti tiek energijos kiek jam reikia. >> >> Ir tokie LEDai ne "cheap LED product". Va tie kurie lengvai diminasi yra >> "cheap". >> >> Bye, Levas >> >> >> "knx" <varzug@gmail.com> wrote in message >> news:hsdhvd$a8g$1@trimpas.omnitel.net... >>> Sveiki, >>> niekaip nesuprantu kaip diminti LED 12V lemputes. >>> Turiu toki dimmeri, kaip atachmente, kuris tinka valdymo sistemai, bet >>> nelabai suprantu kiek ir kokias led lempos (pvz >>> http://eled.lt/Buitinis.htm) >>> jam tinka. Nu suprantoma, kad 12V. Nes kai klausiu dimmerio gamyntojo >>> apie >>> http://www.electricity-monitor.com/mr16-3x1w-led-12v-spot-cool-white-p-141.html >>> tokio tipo lempa, tai jis sako kad: >>> >>> That’s the problem about the cheap LED products. >>> This device works all together with a simple 12 V power supply. >>> But you are not able to dimm this spot. >>> >>> The write about 700mA : because inside they use cree LEDs with a >>> constant >>> current of 700mA. But this doesn’t mean, that the input on the contacts >>> is >>> 12V, 700mA = 8,4W >>> And it is not correct: because the cree LEDs are able to work with >>> 700mA, in >>> this case the write 3x1W. If this LED have an output of 1W the drive >>> them >>> with 350mA!!! >>> It’s not possible to drive this LED without a big cooling device with >>> 700mA >>> in a so small spot >>> >>> You definitely can not dimm this product!!! >>> >>> We also have LED Spots in our product portfolio. In the catalog you will >>> find them as TEKO. >>> This spots we also produce with an 12V input. They are not dimmable. >>> But we also produce them without control: so you can drive them direct >>> with >>> the CURVE actuator. >>> >>> >