driverless A/C LEDS

mauricem00

mauricem00

Well-Known Member
has anyone tried these? https://www.ebay.com/itm/100W-Full-Spectrum-LED-COB-Chip-Grow-Light-Plant-Growing-Lamp-50W-70W-110V-220V/313141409623?_trkparms=aid=111001&algo=REC.SEED&ao=1&asc=20160908105057&meid=c57c7ed7d50641a0b17ee0beda12d0c2&pid=100675&rk=2&rkt=15&mehot=none&sd=223290539700&itm=313141409623&pmt=1&noa=1&pg=2380057&_trksid=p2380057.c100675.m4236&_trkparms=pageci:6cbff3b3-e6f0-11ea-acfc-56001ba7ed09|parentrq:2675ca901740a4b68cb6272dffffd030|iid:1 it appears that californalightworks use a similar driverless C.O.B in their solarxtreme lights. I know these are not as efficient as other diodes but I like that broad spectrum red peaking at 650nmand if they are as effiecient as T5 plant bulbs and last longer than I'm ahead in the game.
 
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PissingNutes

Active Member
If equivalent to 50 70 and 100 that makes them about 6 watt LEDs. But looking at dimensions I see it makes sense that that is actual wattage from the plug. maybe wire them in parallel to make an array.
 
getogrow

getogrow

Well-Known Member
i cant find enough info on them to make a judgement. imo efficiency is just one of many factors. who cares if its not "as efficient" as long as they work.
 
TrippleDip

TrippleDip

Well-Known Member
Hi, I made a thread on these if you search for it. Short answer is they are approx 50% efficient when driven with DC and much less when driven with AC, store bought led lights are better than this now. They will fail in such a way that makes it difficult to tell how many leds are burnt out, and they leak high frequency (10-100s of khz) ac current to ground. Do they work, yes and work best when driven with about 100vdc or with lower voltage ac (variable transformer).

Edit: currently using them for veg lights, replaced my cfls, because idgaf about efficiency and when they burn out I can just replace them for $2.
 
salmonetin

salmonetin

Well-Known Member
cobshopgrow said:
there are probably better alternatives nowadays.

on the quick
same price, knowen datas, will take 6W easily.

the price for cooling is also a factor, especially for COBs.
Driverless versions would be a tad too dangerous for me, they dont have a electrical isolated driver.
Click to expand...
im too curious about the tunable whites (Vesta ...Thrive or similar 0-10v tunable whites or Dim to Warm) and his tunable cct range... anyone tried the tunable whites?...thanks in advance...


...si Wilson por los likes desactivala... ;-)

PD... y amplio info... to Bro C ...they dont have a electrical isolated driver...ok but ...we can use "transformadores de aislamiento"... a little isolation transformer...bueno lo usamos algunos que sabemos de electricidad en AC...hay mas hardware de proteccion pero tambien sube el precio de la solucion... ;-)

siempre me intereso el tema seguridad de las personas y equipos y en tema AC aun mas al trabajar yo en el tema...


pd 1 ... y te pego aqui la respuesta en español que borre por no gustarle a nadie...juass

me gusta la idea de los blancos tuneables ...la otra manera seria poner diferentes ccts pero eso conlleva tres canales uno para blancos frios otro para blancos neutros y otro para blancos calidos... y usar drivers DMX...
aunque ahora veo modulos DALI DMX y KNX para los raspi (se pone interesante el tema iluminacion en raspi) y mezcladas con las wifi mesh o bluetooth mesh (mas interesante para mi)... el tiempo me dira mas y sigo aprendiendo sin comprar ni usar nada...de momento... no llevo prisa...

hay mi niño...muchas cosas que sabia las tengo medio olvidadas... jejeje
...pero si seguro que habra que añadir mas watios para igualar ppfd (no seran tan eficaces)...pero a veces no voy buscando la eficacia sino su funcionalidad... una luz para casa puede servir para cultivar... no dara los mismos resultados que unas mas eficaces pero no hablo de muchos watios para probar... luego miro consumos y decido por donde tirar...
y las puedo usar en casa y en cultivo pequeño...(y el cultivo pequeño lo puedo cambiar a cualquier habitacion de la casa pues las habitaciones tendran la misma luz) repuestos a mano juasss

pd ...y mirando cosas de domotica...veo un tutorial para hacer apps en android que me da que voy a seguir...este 2020 sera una mierda con el tema covid y demas pero en los temas que me gustan esta animadilla la cosa... y me encanta aprender cosas nuevas... por lo menos aprendo y me entretengo...de gratis

...y aun no uso smartphone... estos abuelos desactualizados...juasss ;-)

volando voy...volando vengo y por el camino yo me entretengooo.. oleee


paz

Saludos
 
Last edited:
cobshopgrow

cobshopgrow

Well-Known Member
Creo que el problema es que un transformador de aislamiento es más caro que los controladores LED (que casi siempre están aislados).
Si tuviera que tomar esta ruta, solo usaría lámparas LED prefabricadas en carcasas de plástico.
si tiene un transformador aislante, eso es genial.
 
cobshopgrow

cobshopgrow

Well-Known Member
i can imagine one of these big isolating transformers would do a better job then whats inbuild in the led drivers for sure.
have no actual overview whats the price nowadays for these units, as i said if you have one, perfecto :).
for the average user it would prob complicate things further... even its dam easy.

i saw youre writing a lot about raspi, am sure the raspian OS included browser is able to run google translate perfectly fine.
there are probably even cooler tricks he can do translating stuff for you if that works out technically.
dont get me wrong, just sounds you have a raspi laying around.
 
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