Boost Module 400W, DC‑DC Step‑up Boost Converter Constant Current Power Supply Module LED Driver for Electric Equipment, Digital Products, Laptop

Used to power a computer monitor in my camper, stepping up 12v to 17.5v works perfectly. Very happy with it.

made magsafe car charger for my 2012 15" mac pro, works a treat, set volt to 18.5v (17.5 under load) 20 turns clockwise on current pot (a guesstimate) not overheating and took charge from 86% to 93% in 10 mins

Por calidad y funcionamiento le hubiera dado 5 estrellas, pero en mi caso encontré un inconveniente. Necesitasba un módulo que aceptase diferentes entradas de voltaje y en la salida se pudiesen reducir y aumentar dentro del rango especificado. El problema en mi caso es que la salida solo puede regularse a partir del voltaje de entrada y aumentarla, pero no se puede reducir, yo necesitaba conseguir 12v a partie de una entrada de 19, y no es posible ya que el módulo en su voltaje de salida mínimo es igual al voltaje de entrada y solo permite subirlo. Pensando que el módulo podría estar defectuoso, pedí otro igual, y me encontré que funcionaba de forma identica. Los conservo para otro uso que pueda necesitar, porque lo veo con buena calidad y permite aumentar la corriente y voltaje de salida con mucha precisión. Quizá en la descripción debiera decir que el voltaje de salida será igual o mayor que el de entrada de forma regulable. El envío rápido y

Ottimo , ma attenzione almprimo funzionamento.

I did a quick check so you dont have to! Needed this thing for to power a 19V TV/monitor from a 12V car battery. I didn't test it any higher than the 60W because I don't need it to and and the used power supply can only provide 5A. In a short test it did fine delivering 3A at 19V from a 13V source. I did a quick calculation to determine the efficiency (taking voltage loss in cable into account). In my setting it was approx 93-94% efficicy which I consider to be pretty good. I'm sure you can get a little better and much worse numbers in other configurations. Laying in open air the fing had to dissipate 3-4w which is quite a lot in such a small passive heatsink. In a enclosure without passive cooling I wouldn't trust is at permanent load of 60w. A temperature of 63 deg C. at the mosfet isn't that bad, but in a enclosure I guess it could reach 80C easily. Therefore I would not recommend the product in my usecase when the continuous power draw is over 50w. In my case for the 25w I need for my TV it's fine. No one should ever use this product at the rated 400w. It may even be able to do it, but it won't be save for continuous usage. For me all of this is fine and I'm happy with the performance but will only rate it 4 stars because the claimed specs are way to high for save continues usage especially in a enclosure without active cooling.

Come da descrizione

Me parece que no he captado la idea o las resistencias variables no funcionan,les ruego que me expliquen como accionarlas y cuáles funcionan para la energía "in" y cuál es la "out"