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  • MaxVIP3
    IT
    02/12/2017

    Sono fonte di eccellente potenza luminosa. Le ho acquistate perchè l'alimentazione non richiede trasformatori (220V.) Tuttavia NON POSSONO ESSERE UTILIZZATE SENZA UN DISSIPATORE MINUTO DI VENTOLA. Un dissipatore passivo, per quanto gigante NON E' SUFFICIENTE nella versione da 50 Watt (vedi foto) L'ENORME DISSIPATORE SENZA VENTOLA SI SCALDA E SUPERA I 70 GRADI. Ma ventole a 220V. da 12 centimetri di diametro non si trovano e quindi occorre un alimentatore a 12V. MORALE: NON HA SENSO ACQUISTARE QUESTI PUNTI LUCE... DOVETE FORNIRLI DIRETTAMENTE CON UN DISSIPATORE CON VENTOLA APPROPRIATA.

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  • 19/03/2019

    This produces a bright light. I replace a 300watt halogen with this 50watt LED for a security light on the back of the garage. It gives off almost the same brightness. Very pleased with the results. It generates a lot of heat and definitely needs a heat sink.

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  • 18/10/2017

    Every unit is packed in its own antistatic envelope. The manufacturing looks quite good. I didn't have yet the opportunity to check these chip with the 220Vac because I don't have the proper heatsink and it is not suitable to proceed at full power without the necessary heat dissipation. I am looking to try them with a variac to check each single LED inside the COB and check if the unit works even at lower voltages, as it is possible with the Vdc LED chips. Till now very satisfied about my purchase. ogni unità è imballata nella propria busta antistatica. La produzione sembra piuttosto buona. Non ho ancora avuto l'opportunità di controllare questo chip con il 220Vac perché non ho il giusto dissipatore e non è adatto procedere a piena potenza senza la dissipazione di calore necessaria. Sto cercando di provarli con un variac per controllare ogni singolo LED e vedere se l'unità funziona anche a tensioni più basse, come possibile con i chip LED in tensione continua. Fino adesso sono molto soddisfatto del mio acquisto

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  • 06/10/2017

    What a bargain these super bright LED's are. I purchased a 20W warm white version, which is brighter than the sun! I can only imagine how bright the others are. To connect these to a mains supply, you'll need a very hot soldering iron. Mine is rated at 60W and only just gets hot enough to do the job. After attaching some wires, you'll need to mount the LED on a very substantial heat sink - they also get as hot as the sun! I also suggest applying some thermal heatsink grease between the two. Here's a link to a suitable product on the Banggood website: https://www.banggood.com/GD900-Gray-Compound-Heatsink-Thermal-Paste-Grease-Tube-1g-p-1137036.html

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  • 01/04/2018

    I used this led for replacing an halogen lamp. It was quite simple, since you do not need power supllies. Just connect it to the 220V. It is bright as the previous halogen bulb and it uses 1/4 of the current!

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  • 16/02/2018

    Muy contento con la compra y Llego bien alumbra como yo pensaba con mucha luz lo recomiendo y espero que dure.

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  • 22/05/2018

    Perfect quality. How it is possible to get so much light from so small thing!? This is the product of future!

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  • 11/03/2018

    nice

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  • 13/12/2017

    Very fast delivery. Reasonable price. I recommend to others! Thank you very much.

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  • 10/12/2017

    ottimo led colore bianco per creare le vostre lampade a led. ottima potenza a 12V , bassissimo consumo, occorre però mettere in dissipatore di calore per farlo raffreddare e magari anche una ventolina

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