Moonlight questions - Page 2 - Aquarium Advice

75gMKT · 04-07-2006, 02:44 PM

ok so i cut one open and the resistor colors going away from the led are green, blue, black, black, red, and the resistor as a whole is a light blue color and i plan to put 8-10 or how ever many you recommend over a 75 gal tank

Wizzard~Of~Ozz · 04-07-2006, 05:51 PM

That value can't be right.. It would be 5600Ohms plus (never heard of a red tolerance band, Brown maybe?)

Do you have a multi meter you can measure the resistance with? Might prove a bit more reliable.

Twohobbies, Not to be crude, but that is an unqualified answer that has the potential to harm someone.. If the resistor was rated for 3v then putting 12v to it will result in plastic flying or resistors heating up to dangerous temperatures.

75gMKT · 04-08-2006, 12:12 AM

on seccond glance it does looks to be green, blue, purple, black, brown, or orange ,stupid light. Does that help at all?

greenmaji · 04-08-2006, 01:32 AM

you can get a muli-meter for really cheap, less then 10 bucks for an cheap electrionic around here and about 5-6 bucks for an analog.
wallyword, ACE, look around if intrested..

TwoHobbies · 04-09-2006, 01:37 PM

I did read the info that came with them said 6-14 volts, 12 volts would work fine as long as its DC.

Most, but not all----packages like that are designed for auto use ( 12 volts)

I also don't understand why resistor values are important when we don't know the led voltages. JMO

Wizzard~Of~Ozz · 04-09-2006, 08:29 PM

LED voltage drop is typically .7v, but that can be guessed to be 1v if you like. the important number is the current required by the LED. that is the number that qualifies the resistor value. with the incorrect value there may be too much current flowing through the LED and cause it to fail prematurely or worse, blow up.

75gMKT · 08-15-2006, 11:38 AM

so shold i get a 12 volt or a 9 volt adapter they have ranges from 500-1500ma ?

08-15-2006, 11:51 AM

i just use an old computer power supply and it works fine. it will run 6v or 12v dc.

75gMKT · 08-15-2006, 12:06 PM

well i was looking at gettiung one of those adapters for radio shack so i was wondering what one i should get exactly.

TwoHobbies · 08-15-2006, 02:45 PM

Any 9 or 12 volt DC 300-500 ma adapter should work. The higher the ma number the more leds you can run.

The higher the ma number the more expensive the adapter the more leds it will power. I run 10 blue led's in my nightlight on 300ma with no problem.

Part number 273-1773 From the web sight ....$17.99.... ouch

04-07-2006, 05:51 PM	#12 (permalink)
Wizzard~Of~Ozz Aquarium Advice Addict Community Mentor Join Date: Jan 2005 Location: Ontario, Canada Posts: 2,015 Images: 2	That value can't be right.. It would be 5600Ohms plus (never heard of a red tolerance band, Brown maybe?) Do you have a multi meter you can measure the resistance with? Might prove a bit more reliable. Twohobbies, Not to be crude, but that is an unqualified answer that has the potential to harm someone.. If the resistor was rated for 3v then putting 12v to it will result in plastic flying or resistors heating up to dangerous temperatures. __________________ 120 Gal SW, 150lbs Prem. Fiji, 23Gal Sump, 2x250w 15K MH, 4x65w Actinic 3 x Halichoeres Chrysus (1 surfed), 3 x Nemateleotris magnifica, 1 x Centropyge bicolor, 11 x Scarlet Hermits, 6 x Zebra Hermits, 40 x Astrea Snails, 6 x Nassarius Snails, 3 x Cerith Snails

04-09-2006, 08:29 PM	#16 (permalink)
Wizzard~Of~Ozz Aquarium Advice Addict Community Mentor Join Date: Jan 2005 Location: Ontario, Canada Posts: 2,015 Images: 2	LED voltage drop is typically .7v, but that can be guessed to be 1v if you like. the important number is the current required by the LED. that is the number that qualifies the resistor value. with the incorrect value there may be too much current flowing through the LED and cause it to fail prematurely or worse, blow up. __________________ 120 Gal SW, 150lbs Prem. Fiji, 23Gal Sump, 2x250w 15K MH, 4x65w Actinic 3 x Halichoeres Chrysus (1 surfed), 3 x Nemateleotris magnifica, 1 x Centropyge bicolor, 11 x Scarlet Hermits, 6 x Zebra Hermits, 40 x Astrea Snails, 6 x Nassarius Snails, 3 x Cerith Snails

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04-07-2006, 02:44 PM	#11 (permalink)
75gMKT Aquarium Advice Apprentice Join Date: Feb 2006 Location: North Mankato, Minnesota Posts: 15	ok so i cut one open and the resistor colors going away from the led are green, blue, black, black, red, and the resistor as a whole is a light blue color and i plan to put 8-10 or how ever many you recommend over a 75 gal tank

04-08-2006, 12:12 AM	#13 (permalink)
75gMKT Aquarium Advice Apprentice Join Date: Feb 2006 Location: North Mankato, Minnesota Posts: 15	on seccond glance it does looks to be green, blue, purple, black, brown, or orange ,stupid light. Does that help at all?

04-08-2006, 01:32 AM	#14 (permalink)
greenmaji Aquarium Advice Addict Join Date: May 2005 Location: Central Kentucky Posts: 5,937	you can get a muli-meter for really cheap, less then 10 bucks for an cheap electrionic around here and about 5-6 bucks for an analog. wallyword, ACE, look around if intrested..

04-09-2006, 01:37 PM	#15 (permalink)
TwoHobbies Aquarium Advice Freak Join Date: Jan 2006 Location: Western New York Posts: 357 Images: 9	I did read the info that came with them said 6-14 volts, 12 volts would work fine as long as its DC. Most, but not all----packages like that are designed for auto use ( 12 volts) I also don't understand why resistor values are important when we don't know the led voltages. JMO

08-15-2006, 11:38 AM	#17 (permalink)
75gMKT Aquarium Advice Apprentice Join Date: Feb 2006 Location: North Mankato, Minnesota Posts: 15	so shold i get a 12 volt or a 9 volt adapter they have ranges from 500-1500ma ?

08-15-2006, 11:51 AM	#18 (permalink)
Guest Posts: n/a	i just use an old computer power supply and it works fine. it will run 6v or 12v dc.

08-15-2006, 12:06 PM	#19 (permalink)
75gMKT Aquarium Advice Apprentice Join Date: Feb 2006 Location: North Mankato, Minnesota Posts: 15	well i was looking at gettiung one of those adapters for radio shack so i was wondering what one i should get exactly.

08-15-2006, 02:45 PM	#20 (permalink)
TwoHobbies Aquarium Advice Freak Join Date: Jan 2006 Location: Western New York Posts: 357 Images: 9	Any 9 or 12 volt DC 300-500 ma adapter should work. The higher the ma number the more leds you can run. The higher the ma number the more expensive the adapter the more leds it will power. I run 10 blue led's in my nightlight on 300ma with no problem. Part number 273-1773 From the web sight ....$17.99.... ouch