Spider Farmer SF1000 LED Grow!

[gorillaglueaaron]

Volts in the example provided by Mimed is referring to at the wall, which goes into the driver and sends out volts to the LED's.

Volts from the wall have no effect on the diodes. As long as the driver can handle the walls voltage which every light can, wall voltage doesn't matter.

 

[MIMedGrower]

That is how I read your post.
No they will all be in the same range for the same wattage and diode type

Oh i did say that. I should have said nothing. Lol.

 

[gorillaglueaaron]

That is how I read your post.
No they will all be in the same range for the same wattage and diode type

Not quantity of diodes though.

 

[MIMedGrower]

Sorry @BigCube i shouldnt have posted but i couldnt take the comment i got started with. And this is one of the reasons i turned the sf rep down for a free light. Again sorry. I should have expected what i started. Oops. ;-)

 

[Anthem]

Not quantity of diodes though.

If you have 4 fixtures pulling the same watts from the wall, how does the number of diodes effect the equation?

 

[Anthem]

Volts from the wall have no effect on the diodes. As long as the driver can handle the walls voltage which every light can, wall voltage doesn't matter.

Ah yes it does. If you have 240 volts going into the driver at 1500 watts you have over twice the effective power as 120 volts with 1500 watts. The higher the voltage the more economical the fixture becomes. You will find commercial grows will use 240 or 277 volts because of the economy.

 

[gorillaglueaaron]

If you have 4 fixtures pulling the same watts from the wall, how does the number of diodes effect the equation?

Each diode can handle a certain number of volts.
A diode that has 2.5v and 100mA going through it will be 0.25w.
2 diodes that have 2.5v each and 50mA going through them, will also be 0.25w but will produce more light and less heat.

 

[gorillaglueaaron]

Ah yes it does. If you have 240 volts going into the driver at 1500 watts you have over twice the effective power as 120 volts with 1500 watts. The higher the voltage the more economical the fixture becomes. You will find commercial grows will use 240 or 277 volts because of the economy.

Depends on the amperage.

 

[gorillaglueaaron]

Sorry that's wrong^ I miss read your post.

The driver only lets a certain voltage through. It doesn't consume all the voltage it gets.

And to what you said about the 1500w lights at 120v vs 240v, the 240v is more efficient because it means lower amperage (but more diodes).

 

[Anthem]

Depends on the amperage.

Again Watts divided by voltage equals Amps. Replacing the equation 240 volts at 15 amps is over double 120 volts at 15 amps. Still over double.

 

[Anthem]

Sorry that's wrong^ I miss read your post.

The driver only lets a certain voltage through. It doesn't consume all the voltage it gets.

And to what you said about the 1500w lights at 120v vs 240v, the 240v is more efficient because it means lower amperage (but more diodes).

Yes less amperage, less than half but just slightly. but the diodes are a physical part of the fixture.

 

[Anthem]

Sorry that's wrong^ I miss read your post.

The driver only lets a certain voltage through. It doesn't consume all the voltage it gets.

And to what you said about the 1500w lights at 120v vs 240v, the 240v is more efficient because it means lower amperage (but more diodes).

The driver actually has a stepdown transformer in it of some sort. It drops the voltage way down to like 10 volts.

 

[gorillaglueaaron]

The driver actually has a stepdown transformer in it of some sort. It drops the voltage way down to like 10 volts.

If you're running parallel.

 

[Anthem]

If you're running parallel.

Parallel has nothing to do with it. A parallel circuit has two or more paths for current to flow through. Voltage is the same across each component of the parallel circuit. The sum of the currents through each path is equal to the total current that flows from the source.

 

[Anthem]

Each diode requires 2.5v to turn it on.
light 1 requires 5v and 100mA.
light 2 requires 2.5v and 200mA.
View attachment 1079585

That is inside the fixture. So far everything that has been discussed it about 4 fixtures being in comparison. Nothing to do with different voltage and amp requirements for diodes within the fixture.

 

[gorillaglueaaron]

That is inside the fixture. So far everything that has been discussed it about 4 fixtures being in comparison. Nothing to do with different voltage and amp requirements for diodes within the fixture.

I was just trying to show that parallel and series require different voltage and amperage.

Let me draw a new one for you to show how lights can be different if they have the same wattage and diode type.

 

[Anthem]

That is inside the fixture. So far everything that has been discussed it about 4 fixtures being in comparison. Nothing to do with different voltage and amp requirements for diodes within the fixture.

Did you take your picture down?
The example you show would require separate connections to the boards to achieve varies voltages. Quantum boards correct me if I am wrong, but they only have 1 positive and 1 negative lead.

 

[gorillaglueaaron]

Did you take your picture down?
The example you show would require separate connections to the boards to achieve varies voltages. Quantum boards correct me if I am wrong, but they only have 1 positive and 1 negative lead.

I took it down because I don't want that picture on my profile.

I'm not actually sure how those companies run their quantum boards. The connection separates because it is in parallel, that is what I'm saying.

 

[Anthem]

I took it down because I don't want that picture on my profile.

I'm not actually sure how those companies run their quantum boards. The connection separates because it is in parallel, that is what I'm saying.

What do you mean by separates?

 

[gorillaglueaaron]

Ok that picture really doesn't matter, I'm working on another one that actually applies to the argument.

If you really want me to explain it to you, then I will after but it doesn't apply to the argument.