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Average Rating: 5 (5 Reviews)
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  • 1
  • Mar 14, 2017

For the power supply, I accidentally ordered an AC / AC converter of 230 V / 12 V 20W, but after the BY133 has been placed between the + pole of the lead in the light strip and one of the inverter outputs to direct the ~ 12V, because the LEDs themselves have a declared positive voltage of only 5 V, even without filtering, this combination turned out to be as bright as using a much more expensive AC / DC source. The peak voltage is higher than those of 12 V, but in the negative half-wave LED does not light up, so it cools down, and at 50Hz its the same flicker as the fluorescent lamps. It is only necessary to avoid a stroboscopic effect where it could endanger the safety of persons, use the same pattern as used with fluorescent lamps and power the inverters from different phases of electrical supply. For my purpose to illuminate the staircase for access to the house and in conjunction with the PIR sensor, this pulsating supply voltage is completely satisfactory. Pro napájení jsem omylem objednal AC/AC měnič 230 V/12 V 20W, ale po zařazení diody BY133 mezi + pól přívodu do světelného pásku a jeden z výstupů měniče k usměrnění těch ~12 V, protože samotné LED mají údajně dovolené závěrné napětí jen 5 V, se i bez použití filtrace tato kombinace ukázala být stejně svítivou, jako by bylo použití mnohem dražšího zdroje AC/DC. Špičkové napětí je sice vyšší nežli těch = 12 V, ale v záporné půlvlně LED nesvítí a tak se ochladí, no a při těch 50Hz je to blikání stejně nepatrné, jako u zářivek. Jen je nutné pro zamezení stroboskopického efektu tam kde by to mohlo ohrozit bezpečnost osob, použít stejného fíglu jako se používá u zářivek a napájet měniče z různých fází elektrických přívodů. Pro můj účel k osvětlení schodiště pro přístup do domu a ve spojitostí s PIR čidlem, je to pulzující napájecí napětí však zcela vyhovující.

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  • Feb 06, 2016

Very good value for money, good lighting. I recommend. perfect use with the remote control. Tres bon rapport qualité prix, bon éclairage. Je recommande. utilisation parfaite avec la télécommande.

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  • Oct 14, 2015

Great object, I did lighting for the undercoat stuff and came out a spetacle! Considering the energy and visual effect, an excellent solution for local lighting. The unbeatable price Ottimo oggetto, ho fatto illuminazione per la cuccina sottopensole e uscito un spetacolo! Considerando il comsumo energetico e leffetto visivo una ottima soluzione per illuminazione locale. Il prezzo imbattibile

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  • Jan 09, 2016

Really good purchase, seems as it should Rigtig godt køb, virker som den skal

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  • Sep 04, 2015

Great product, arrived on time and in excellent quality otimo produto, chegou dentro do prazo e em ótimas qualidades

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