Q: LED na trafo od halogenki?

Situacija je sljedeca:

Kolega u svom UO planira zamjeniti kompletnu halogenu rasvjetu u LED.

  1. Trenutno ima po plafonu 20x MR16 zarulja 35/50W spojeno na 5 trafoa po 200W spojenih u paralelu. Uzeli za probu 10x po 4x1W(cekamo postara). Dal tu treba kakve preinake na napajanju(ili mozda zamjena?) ili je samo plug 'n play?

1.1 Bil je kupil prije koju godinu neku ledicu sa 20-30 emitera neke prastare generacije (kakve se po upaljacima najdeju :) ), radi ok, samo je svjetlo slabo, onda je valjda ok napajanje i za ove ledice, ili?

MR16 ledice koje su narucene, u opisu im pise da rade na 12V AC ili 12V DC i da max voltaza nesmije davati vise od 14V

Evo C/P "Direct replace your old halogen lamp in your existing light system as it work on AC 12V and DC 12V. (Most traditional halogen incandescent lamp use AC 12V)

This LED lamp work with all types of magnetic transformers but not all electronic transformers, because many electronic transformers require a minimum load higher than 4 watt. So we recommend you check your fixture track and change power LED power supply if necessary. When you find the LED lamp flickering or even go out after just a few second, that's mean your transformer is not fit.

Also, many Track Light power supplies will produce voltages as high as

16 with low loading or no loading (LED lamps provide very low loading). You must make sure that the voltage of your existing power supply does not exceed 14 Volts with the LED bulbs installed. The easiest way is test your transformer with a multi-meter in prior."

Pitanje: Ako voltaza ide preko 14V, koje je rjesenje? Novi trafo, ili mozda ostaviti samo 1 od tih 5 trafoa? Nekakvi DC-DC converter moze tu kaj pomoci, ili?

  1. Ima jos 5 rasvjetnih tijela sa 3x10W G4 halogenki, paralelno spojene, svako ima svoj trafo.

2.1 Isto prije 2 godine uzel neke korn ledice sa 3528 emiterima(ili cak manjim, cca 24kom emitera, mozda vise), spojene 2 takve sa jednom G4 10W na jednom "lusteru", to radi ok.

2.2 Donesem mu za probu G4 plocastu ledicu sa 9x5050 emitera, spojimo na luster na kojem su jos 2x10W klasicne halogenke, ledica svijetli ali treperi! Nije mjeren napon na zicama(bar ne sad nedavno), al susjed elektronicar(koji inace odrzava taj UO) veli da su napajanja klasicna za halogene zarulje, tj. da bi napon moral biti oko 13.4V

Guglam kaj se tice treperenja, pisu da nije dobar trafo ako treperi ledica, malo me zbunjuje to kaj na jednom rade ledice ok, na drugom trepere, mozda nisu isti trafoi(trafaci, kakgot :))...

Dal najbolje odma i naruciti 12V 1A driver(na 1 luster idu 3 ledice po

2-3W), tipa ovo?
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Najvise me brine da zarulje ne pregore zbog mozda prevelikog napona. Imal ko slicnu situaciju?

tnx

Reply to
nizz
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Prvo provjeri ovo, citat: This LED lamp work with all types of magnetic transformers but not all electronic transformers, because many electronic transformers require a minimum load higher than 4 watt. So we recommend you check your fixture track and change power LED power supply if necessary. When you find the LED lamp flickering or even go out after just a few second, that's mean your transformer is not fit

Reply to
vaso

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