3r3118. 3r3-31. Almost all the LED lamps that can be bought on Aliexpress are very poor: many have an unacceptable ripple of light, a low color rendering index, often the real power and luminous flux is five times less than promised. I was already sure that Ali had no good lamps at all, but there was an exception. 3r3105.  3r3118. 3r3105.  3r3118. 3r380. 3r3102. 3r3105.  3r3118. Last year I tested 13 different bulbs from Aliexpress, links to which were sent by readers and visitors to the Lamptest site. Alas, I could not name any of the lamps that people thought were good. The only light bulb that did not have a ripple and had a CRI (Ra) greater than 80 had a power that was five times less than promised. 3r3105.  3r3118. 3r3105.  3r3118. Recently I wrote to Sergei Zeldinov, who said that he had found a good light bulb with G9 socket on Ali. The seller directly in the name of the product writes "without pulsation (no flicker)", says CRI (Ra)> 80 color rendering index (in another place is written> 85), indicates a luminous flux of 690 lm (in another place it says 600-700 lm) and claims that the lamp replaces a 70 watt halogen lamp. 3r3105.  3r3118. 3r3105.  3r3118. 3r380. spectrometer. , power consumption of the device GW Instek GPM-821? the level of pulsation of the device 3r332. Uprtek MK350D
. The minimum operating voltage was measured using a instrument. Lamptest 1 3r3102. stabilizer
Calm Instab 500 and LATRA Suntek TDGC2-0.5. Before measurements to stabilize the parameters of the lamp heated for half an hour. 3r3105.  3r3118. 3r3105.  3r3118. The result of my measurements:
 3r3118. 3r3105.  3r3118. 3r380. 3r3114. 3r3105.  3r3118. Thanks to these LEDs, the lamp shines a little forward, even though the main distribution of the light flux falls on the sides. 3r3105.  3r3118. 3r3105.  3r3118. 3r380. Lamptest.ru/page/ali
), Good CRI tapes ( Habr.com/company/lamptest/blog/371259 ) And this lamp I can conclude that on Aliexpress you can buy only those light sources, in the description of which it is explicitly stated that they are without pulsation (No Flicker), a CRI (Ra) value of at least 80 is given and the luminous flux is indicated in lumens (lm, lm). All other lamps (including from the same seller) should not be bought. 3r3105.  3r3118. 3r3105.  3r3118. P.S. This lamp on the site Lamptest: lamptest.ru/review/02349-foroureyes-g9-2835-88led-no-flicker-cri80 (reference to Ali is there). 3r3105.  3r3118. 3r3105.  3r3118. © 201? Alexey Nadyozhin
3r3118. 3r3118. 3r3118. 3r3111. ! function (e) {function t (t, n) {if (! (n in e)) {for (var r, a = e.document, i = a.scripts, o = i.length; o-- ;) if (-1! == i[o].src.indexOf (t)) {r = i[o]; break} if (! r) {r = a.createElement ("script"), r.type = "text /jаvascript", r.async =! ? r.defer =! ? r.src = t, r.charset = "UTF-8"; var d = function () {var e = a.getElementsByTagName ("script")[0]; e.parentNode.insertBefore (r, e)}; "[object Opera]" == e.opera? a.addEventListener? a.addEventListener ("DOMContentLoaded", d,! 1): e.attachEvent ("onload", d ): d ()}}} t ("//mediator.mail.ru/script/2820404/"""_mediator") () (); 3r33112. 3r3118. 3r3114. 3r3118. 3r3118. 3r3118. 3r3118.